Subtract: (2x^2-7x+5)-(-6x^2-4x-2) A. -4x^2-11x+3 B. -4x^2-5x+3 C. 8x^2-13x+7 D. 8x^2-3x+7

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asked Dec 13, 2020 91.3k views

1 vote

Subtract: (2x^2-7x+5)-(-6x^2-4x-2)

A. -4x^2-11x+3
B. -4x^2-5x+3
C. 8x^2-13x+7
D. 8x^2-3x+7

Mathematics
middle-school

KaronatoR asked

by KaronatoR

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2 Answers

2 votes

Answer:

8x^2-3x+7

Explanation:

By simplifying the expression.

Ajay Thakur answered Dec 15, 2020

by Ajay Thakur

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5 votes

Answer:

$\large\boxed{D.\ 8x^2-3x+7}$

Explanation:

$(2x^2-7x+5)-(-6x^2-4x-2)\\\\=2x^2-7x+5-(-6x^2)-(-4x)-(-2)\\\\=2x^2-7x+5+6x^2+4x+2\qquad\text{combine like terms}\\\\=(2x^2+6x^2)+(-7x+4x)+(5+2)\\\\=8x^2-3x+7$

ConnectionLost answered Dec 18, 2020

by ConnectionLost

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