Question

(x +2) ( x^2 - 6x +8) - (2x -3)(2x^2 -x -1) (Simplify )
-5x^3 + 4x^2 -5x +13
5x^3 + 4x^2 -5x +13
-5x^3 + 3x^2 -5x +13
-5x^3 + 4x^2 -5x +16​

Answer 1

Answer:

-3x³+4x²-5x+13

Step-by-step explanation:

(x +2) ( x² - 6x +8) - (2x -3)(2x² -x -1)

= [(x³-6x²+8x)+(2x²-12x+16)]-[(4x³-2x²-2x)+(-6x²+3x+3)]

= [x³-6x²+8x+2x²-12x+16]-[4x³-2x²-2x-6x²+3x+3]

= [x³-4x²-4x+16]-[4x³-8x²+x+3]

= x³-4x²-4x+16-4x³+8x²-x-3

= -3x³+4x²-5x+13

hope it helps

PS: i think the options are wrong, i did the sum thrice and the answer isn't matching the options you gave