Question 1011151

{{{(4x^2-3x - 1) +( -3x^2 +5x - 8)}}}

={{{4x^2-3x - 1  -3x^2 +5x - 8}}}

={{{4x^2 -3x^2 +5x-3x- 1 - 8}}}

={{{x^2+2x- 9}}}