Algebra Examples

${(3 x + 4)}^{5}$

Step 1

Use the Binomial Theorem.

${(3 x)}^{5} + 5 {(3 x)}^{4} \cdot 4 + 10 {(3 x)}^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2

Simplify each term.

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Step 2.1

Apply the product rule to $3 x$ .

$3^{5} x^{5} + 5 {(3 x)}^{4} \cdot 4 + 10 {(3 x)}^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.2

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

$243 x^{5} + 5 {(3 x)}^{4} \cdot 4 + 10 {(3 x)}^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.3

Apply the product rule to $3 x$ .

$243 x^{5} + 5 (3^{4} x^{4}) \cdot 4 + 10 {(3 x)}^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.4

Raise $3$ to the power of $4$ .

$243 x^{5} + 5 (81 x^{4}) \cdot 4 + 10 {(3 x)}^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.5

Multiply $81$ by $5$ .

$243 x^{5} + 405 x^{4} \cdot 4 + 10 {(3 x)}^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.6

Multiply $4$ by $405$ .

$243 x^{5} + 1620 x^{4} + 10 {(3 x)}^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.7

Apply the product rule to $3 x$ .

$243 x^{5} + 1620 x^{4} + 10 (3^{3} x^{3}) \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.8

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

$243 x^{5} + 1620 x^{4} + 10 (27 x^{3}) \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.9

Multiply $27$ by $10$ .

$243 x^{5} + 1620 x^{4} + 270 x^{3} \cdot 4^{2} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.10

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

$243 x^{5} + 1620 x^{4} + 270 x^{3} \cdot 16 + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.11

Multiply $16$ by $270$ .

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 10 {(3 x)}^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.12

Apply the product rule to $3 x$ .

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 10 (3^{2} x^{2}) \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.13

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

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 10 (9 x^{2}) \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.14

Multiply $9$ by $10$ .

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 90 x^{2} \cdot 4^{3} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.15

Raise $4$ to the power of $3$ .

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 90 x^{2} \cdot 64 + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.16

Multiply $64$ by $90$ .

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 5760 x^{2} + 5 (3 x) \cdot 4^{4} + 4^{5}$

Step 2.17

Multiply $3$ by $5$ .

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 5760 x^{2} + 15 x \cdot 4^{4} + 4^{5}$

Step 2.18

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

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 5760 x^{2} + 15 x \cdot 256 + 4^{5}$

Step 2.19

Multiply $256$ by $15$ .

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 5760 x^{2} + 3840 x + 4^{5}$

Step 2.20

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

$243 x^{5} + 1620 x^{4} + 4320 x^{3} + 5760 x^{2} + 3840 x + 1024$