Question

factorise
1.4x²-9(2x-y)²
2.ab²-ac²
3.36x³-x
4.3-12b
$5.{2x}^{2} - \frac{1}{2}$
6.x⁴-y⁴
7.16y⁴-81
8.(a+b)²-(b-a)²
9.(x+2y-5z²)-(x-2y+5z)²
if u know all the answer I humbly request u to answer it correctly please step by step explain me please ​

Answer 1

Answer:

2x2-1/2

2(x2 -2 )