Question

a)3x2+5x2-x-3-3.(x2-x2+2x+4)=

Answer 1

3.2 + 5.2 - x - 3 - 3. (x2 - x2 + 2x + 4) =
6 + 10. - x - 3 (-3x - 6 + 3x - 6 - 6x - 12)=
-x -3x +3x - 6x = -6 -10 + 6 +6 + 12
-4x -3x = -16 + 24
-7x = 8
x= -7/8