Finite Math Examples

${(2 x - 3)}^{7}$

Step 1

Simplify and reorder the polynomial.

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Step 1.1

Use the Binomial Theorem.

${(2 x)}^{7} + 7 {(2 x)}^{6} \cdot - 3 + 21 {(2 x)}^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2

Simplify each term.

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Step 1.2.1

Apply the product rule to $2 x$ .

$2^{7} x^{7} + 7 {(2 x)}^{6} \cdot - 3 + 21 {(2 x)}^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.2

Raise $2$ to the power of $7$ .

$128 x^{7} + 7 {(2 x)}^{6} \cdot - 3 + 21 {(2 x)}^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.3

Apply the product rule to $2 x$ .

$128 x^{7} + 7 (2^{6} x^{6}) \cdot - 3 + 21 {(2 x)}^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.4

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

$128 x^{7} + 7 (64 x^{6}) \cdot - 3 + 21 {(2 x)}^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.5

Multiply $64$ by $7$ .

$128 x^{7} + 448 x^{6} \cdot - 3 + 21 {(2 x)}^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.6

Multiply $- 3$ by $448$ .

$128 x^{7} - 1344 x^{6} + 21 {(2 x)}^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.7

Apply the product rule to $2 x$ .

$128 x^{7} - 1344 x^{6} + 21 (2^{5} x^{5}) {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.8

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

$128 x^{7} - 1344 x^{6} + 21 (32 x^{5}) {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.9

Multiply $32$ by $21$ .

$128 x^{7} - 1344 x^{6} + 672 x^{5} {(- 3)}^{2} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.10

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

$128 x^{7} - 1344 x^{6} + 672 x^{5} \cdot 9 + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.11

Multiply $9$ by $672$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} + 35 {(2 x)}^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.12

Apply the product rule to $2 x$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} + 35 (2^{4} x^{4}) {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.13

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

$128 x^{7} - 1344 x^{6} + 6048 x^{5} + 35 (16 x^{4}) {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.14

Multiply $16$ by $35$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} + 560 x^{4} {(- 3)}^{3} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.15

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

$128 x^{7} - 1344 x^{6} + 6048 x^{5} + 560 x^{4} \cdot - 27 + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.16

Multiply $- 27$ by $560$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 35 {(2 x)}^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.17

Apply the product rule to $2 x$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 35 (2^{3} x^{3}) {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.18

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

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 35 (8 x^{3}) {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.19

Multiply $8$ by $35$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 280 x^{3} {(- 3)}^{4} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.20

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

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 280 x^{3} \cdot 81 + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.21

Multiply $81$ by $280$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} + 21 {(2 x)}^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.22

Apply the product rule to $2 x$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} + 21 (2^{2} x^{2}) {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.23

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

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} + 21 (4 x^{2}) {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.24

Multiply $4$ by $21$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} + 84 x^{2} {(- 3)}^{5} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.25

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

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} + 84 x^{2} \cdot - 243 + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.26

Multiply $- 243$ by $84$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} - 20412 x^{2} + 7 (2 x) {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.27

Multiply $2$ by $7$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} - 20412 x^{2} + 14 x {(- 3)}^{6} + {(- 3)}^{7}$

Step 1.2.28

Raise $- 3$ to the power of $6$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} - 20412 x^{2} + 14 x \cdot 729 + {(- 3)}^{7}$

Step 1.2.29

Multiply $729$ by $14$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} - 20412 x^{2} + 10206 x + {(- 3)}^{7}$

Step 1.2.30

Raise $- 3$ to the power of $7$ .

$128 x^{7} - 1344 x^{6} + 6048 x^{5} - 15120 x^{4} + 22680 x^{3} - 20412 x^{2} + 10206 x - 2187$

Step 2

The largest exponent is the degree of the polynomial.

$7$