Question

what is the simplified form of.....

1) 9y^5/15x^7 (divided by) 5x^3/45y^2

2) x+3/x^2-x-12 (times) x-4/x^2-8x+16

3) x-2/x^2+x-6 (divided by) x^2+5x+4/x+4

Answer 1

y^a/y^b = y^(a-b)

Answer 2

1.) (27 y^7)/(5 x^10)

Answer 3

thanks