Which expression is equivalent to the given expression -2X ^ 2 + 8x - 9 + 4x + 7x ^ 2 + 2 A. -5x ^ 2 + 4x + 11 B. -9x ^ 2 + 4x - 7 C. -9x ^ 2 - 12x + 11 D. 5x ^ 2 + 12x - 7

D. 5x 2+12x−7

Step-by-step explanation:

(0-(2•(x2)+8x)-9)+4x)+7x2)+2

(0-2x2)+8x)-9)+4x)+7x2)+2

Factoring  5x2+12x-7

The first term is,  5x2  its coefficient is  5 .

The middle term is,  +12x  its coefficient is  12 .

The last term, "the constant", is  -7

Step-1 : Multiply the coefficient of the first term by the constant   5 • -7 = -35

Step-2 : Find two factors of  -35  whose sum equals the coefficient of the middle term, which is   12 .

     -35 +   1 =   -34

     -7+   5 =   -2

     -5+   7 =   2

     -1+   35=   34

No two such factors can be found

Trinomial can not be factored