Mathematics: 7x^(2) -2x (-4-x) explain how you got the answer

7x^(2) -2x (-4-x) explain how you got the answer

wrightstephanie193

15.01.2022

$7 {x}^{2} - 2x( - 4 - x) = 9 {x}^{2} + 8x$

Step-by-step explanation:

We want to simplify

$7 {x}^{2} - 2x( - 4 - x)$

We expand using the distributive property to obtain:

$7 {x}^{2} + 8x + 2 {x}^{2}$

We regroup the terms to get:

$7 {x}^{2} + 2 {x}^{2} + 8x$

We now simplify to get:

$9 {x}^{2} + 8x$

Therefore

$7 {x}^{2} - 2x( - 4 - x) = 9 {x}^{2} + 8x$

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samiller30

11.09.2020

Step-by-step explanation:

A i rhink

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