Trigonometry Examples

${(5 v + 2)}^{6}$

Step 1

Pascal's Triangle can be displayed as such:

$1$

$1 - 1$

$1 - 2 - 1$

$1 - 3 - 3 - 1$

$1 - 4 - 6 - 4 - 1$

$1 - 5 - 10 - 10 - 5 - 1$

$1 - 6 - 15 - 20 - 15 - 6 - 1$

The triangle can be used to calculate the coefficients of the expansion of ${(a + b)}^{n}$ by taking the exponent $n$ and adding $1$ . The coefficients will correspond with line $n + 1$ of the triangle. For ${(5 v + 2)}^{6}$ , $n = 6$ so the coefficients of the expansion will correspond with line $7$ .

Step 2

The expansion follows the rule ${(a + b)}^{n} = c_{0} a^{n} b^{0} + c_{1} a^{n - 1} b^{1} + c_{n - 1} a^{1} b^{n - 1} + c_{n} a^{0} b^{n}$ . The values of the coefficients, from the triangle, are $1 - 6 - 15 - 20 - 15 - 6 - 1$ .

$1 a^{6} b^{0} + 6 a^{5} b + 15 a^{4} b^{2} + 20 a^{3} b^{3} + 15 a^{2} b^{4} + 6 a b^{5} + 1 a^{0} b^{6}$

Step 3

Substitute the actual values of $a$ $5 v$ and $b$ $2$ into the expression.

$1 {(5 v)}^{6} {(2)}^{0} + 6 {(5 v)}^{5} {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4

Simplify each term.

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Step 4.1

Multiply ${(5 v)}^{6}$ by $1$ .

${(5 v)}^{6} {(2)}^{0} + 6 {(5 v)}^{5} {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.2

Apply the product rule to $5 v$ .

$5^{6} v^{6} {(2)}^{0} + 6 {(5 v)}^{5} {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.3

Raise $5$ to the power of $6$ .

$15625 v^{6} {(2)}^{0} + 6 {(5 v)}^{5} {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.4

Anything raised to $0$ is $1$ .

$15625 v^{6} \cdot 1 + 6 {(5 v)}^{5} {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.5

Multiply $15625$ by $1$ .

$15625 v^{6} + 6 {(5 v)}^{5} {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.6

Apply the product rule to $5 v$ .

$15625 v^{6} + 6 (5^{5} v^{5}) {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.7

Raise $5$ to the power of $5$ .

$15625 v^{6} + 6 (3125 v^{5}) {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.8

Multiply $3125$ by $6$ .

$15625 v^{6} + 18750 v^{5} {(2)}^{1} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.9

Evaluate the exponent.

$15625 v^{6} + 18750 v^{5} \cdot 2 + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.10

Multiply $2$ by $18750$ .

$15625 v^{6} + 37500 v^{5} + 15 {(5 v)}^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.11

Apply the product rule to $5 v$ .

$15625 v^{6} + 37500 v^{5} + 15 (5^{4} v^{4}) {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.12

Raise $5$ to the power of $4$ .

$15625 v^{6} + 37500 v^{5} + 15 (625 v^{4}) {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.13

Multiply $625$ by $15$ .

$15625 v^{6} + 37500 v^{5} + 9375 v^{4} {(2)}^{2} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.14

Raise $2$ to the power of $2$ .

$15625 v^{6} + 37500 v^{5} + 9375 v^{4} \cdot 4 + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.15

Multiply $4$ by $9375$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20 {(5 v)}^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.16

Apply the product rule to $5 v$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20 (5^{3} v^{3}) {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.17

Raise $5$ to the power of $3$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20 (125 v^{3}) {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.18

Multiply $125$ by $20$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 2500 v^{3} {(2)}^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.19

Raise $2$ to the power of $3$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 2500 v^{3} \cdot 8 + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.20

Multiply $8$ by $2500$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 15 {(5 v)}^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.21

Apply the product rule to $5 v$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 15 (5^{2} v^{2}) {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.22

Raise $5$ to the power of $2$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 15 (25 v^{2}) {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.23

Multiply $25$ by $15$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 375 v^{2} {(2)}^{4} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.24

Raise $2$ to the power of $4$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 375 v^{2} \cdot 16 + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.25

Multiply $16$ by $375$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 6 {(5 v)}^{1} {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.26

Simplify.

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 6 (5 v) {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.27

Multiply $5$ by $6$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 30 v {(2)}^{5} + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.28

Raise $2$ to the power of $5$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 30 v \cdot 32 + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.29

Multiply $32$ by $30$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + 1 {(5 v)}^{0} {(2)}^{6}$

Step 4.30

Multiply ${(5 v)}^{0}$ by $1$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + {(5 v)}^{0} {(2)}^{6}$

Step 4.31

Apply the product rule to $5 v$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + 5^{0} v^{0} {(2)}^{6}$

Step 4.32

Anything raised to $0$ is $1$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + 1 v^{0} {(2)}^{6}$

Step 4.33

Multiply $v^{0}$ by $1$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + v^{0} {(2)}^{6}$

Step 4.34

Anything raised to $0$ is $1$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + 1 {(2)}^{6}$

Step 4.35

Multiply ${(2)}^{6}$ by $1$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + {(2)}^{6}$

Step 4.36

Raise $2$ to the power of $6$ .

$15625 v^{6} + 37500 v^{5} + 37500 v^{4} + 20000 v^{3} + 6000 v^{2} + 960 v + 64$