Question 212192
1. 12x^2-2x-30
2(6x^2-x-15)
2(2x+3)(3x-5) ans.

2. 2x^4-32y^4
2(x^4-16y^4)
2(x^2-4y^2)(2x^2+4y^2)
2(x-2y)(x+2y)(2x^2+4y^2) ans.