Expand and Simplify
3(x2+4)
3x2+12
2(x-4)
2x-8
7x2(x3-4x)
7x5-28x3
(x-7)(x+2)
x2 -5x - 14
3+2(x5-3x+1)+4
=2x5-6x+9
(2x+4)(x-8)
2x2 - 12x - 32
=8x3-4x+8
3(x+2)(x+3)
3x2 + 15x + 18
-6-3(-x5+x-2)-2x+1
=3x5-5x+1
-(-(-(-x-1)(-x+1)))
-x2+1