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3 years ago

Find (x+4) (x²+x-2). Write your answer in standard form. The product is

Mathematics

1 answer:

iren [92.7K]3 years ago

7 0

Answer:

x³ + 5x² + 2x - 8

Step-by-step explanation:

1) Distribute

(x + 4) (x² + x - 2)

x(x² + x - 2) + 4 ( x² + x - 2)

2) Distribute

x(x² + x - 2) + 4 (x² + x - 2)

x³ + x² - 2x + 4 (x² + x - 2)

3) Distribute

x³ + x² - 2x + 4 (x² + x - 2)

x³ + x² - 2x + 4x² + 4x - 8

4) Combine like terms

x³ + x² - 2x + 4x² + 4x - 8

x³ + 5x² - 2x + 4x - 8

5) Combine like terms

x³ + 5x² - 2x + 4x - 8

x³ + 5x² + 2x - 8

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Step-by-step explanation:

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Answer:

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3 years ago

Why is 3 * 1/10 less than 3*10

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4 years ago

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4 years ago

PLEASE Solve y=-2.4x+8.2

frez [133]

$x = - \frac{41}{12} + y \times \frac{5}{12}$

Step-by-step explanation:

$y = 2.4x + 8.2$

move 2.4x to the left-hand side and change its sign.
move y to the right-hand side and change its sign.

$- 2.4x = 8.2 - y$

Divide both sides of the equation by -2.4

$\answer$

$x = - \frac{41}{12} + y \times \frac{5}{12}$

<u>#CarryOnLearning</u>

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3 years ago

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