Answer:
solution will be
1. 4x²-6x-4
2. 8x³+4x²-8x-4
3. x⁵-x⁴+3x³+x²+12
Step-by-step explanation:
1. (4x+2)(x-2)
apply foil method (a+b)(c+d)=ac+ad+bc+bd
(4x+2)(x-2)=4x.x + 4x(-2) + 2x + 2(-2)
2. (4x²-4) (2x+1)
apply the same method as question no.1
(4x²-4) (2x+1)=4x².2x + 4x².1 + -4.2x-4.1
3. (x²+3) (x³-x²+4)
Distributive parentheses
(x²+3) (x³-x²+4)= x².x³ + x²(-x²) + x².4+ 3x³+3(-x²) +3.4
