Expand the brackets in the questions below. Make sure that you simplify your answer.

1) (5*y*^{2} + 4)(3*y* – 6)

2) (4*x*^{2}*y* + 3*x*)(5*xy* – 9)

3) (*x* + 2)(*x* + 3)(*x* – 1)

4) (*y* + 4)(*y* – 5)(2*y* – 3)

5) (3*x* – 4)(5 – *x*)(2 – *x*)