Question

Simplify: (4a + 2b)(a – b)

Answer 1

a 4a^2– 6ab – 2b^2

b 4a^2 – 2ab – 2b^2

c 4a^2 – 8ab – 2b^2

d 4a^2 + 2ab – 2b^2

Answer 2

b

Answer 3

(4a + 2b)(a – b)
(4a)*(a)+(4a)*(-b)+(2b)*(a)+(2b)*(-b)

Answer 4

Expand the following:
(4 a+2 b) (a-b)
Multiply 4 a+2 b and a-b together using FOIL.
(4 a+2 b) (a-b) = (4 a) (a) + (4 a) (-b) + (2 b) (a) + (2 b) (-b):
4 a a-4 a b+2 b a-2 b b
Combine products of like terms.
4 a a = 4 a^2:
4 a^2-4 a b+2 b a-2 b b
Combine products of like terms.
2 b (-b) = -2 b^2:
Answer: 4 a^2-4 a b+2 b a+-2 b^2