Question

reducand termenii asemene din 3(x²-4x-3)-2(x²-5x-4)-(3x²+4x-3) se va obtine ....?

Answer 1

3•x•x-12x-9-2•x•x+10x+8-3x•x-4x+3=-2x•x-6x+2.

Answer 2

$\rm 3(x^2-4x-3)-2(x^2-5x-4)-(3x^2+4x-3)= \\ \\ \not 3x^\not^{2}-12x-9-2x^2+10x+8-\not3x^\not^{2}-4x+3= \\ \\ (-12x+10x-4x)-9+8+3-2x^2= \\ \\ 2-2x^2-6x= \\ \\ \bold{=2(1-x^2-3x)}$