Question

por favor.. ajudem..

1- Calcule:

a- (3-1/2x)(3+1/2x)

b- (1/2x+1)(1/3x-1)

Answer 1

a) (3-1 ÷ 2x) × (3+1 ÷ 2x)
(2 ÷ 2x) × (4 ÷ 2x)
8 + 4x + 8x + 4x
4x + 4x + 8x + 8
16x + 8
16x = -8
x = -8 ÷ 16
x = -0.5

b) -