Question

Which polynomial represents the difference below?
3x^2+8x+7-(4x^2-2x)

A.–x2 + 6x + 7

B.–x2 + 10x + 7

C.3x2 + 4x + 7

D.3x2 + 6x + 7

Answer 1

− x^ 2 + 10 x + 7 so the answer is B.

                                                    hope it helps

Answer 2

Answer:

$-x^2+10x+7$

Step-by-step explanation:

3x^2+8x+7-(4x^2-2x). find the difference of the polynomials

First remove the parenthesis by multiplying minus inside the parenthesis.

$3x^2+8x+7-4x^2+2x$

Now we combine like terms. the terms with same variables and same exponents are like terms.

$3x^2-4x^2= -1x^2$

$8x +2x= 10x$

$3x^2+8x+7-(4x^2-2x)=-x^2+10x+7$