Question

Factor

`(18 x^(-2)y ^(2) )/(2 x^(2) y)`

Answer 1

When you write terms in denominator on numerator, sign of indices changes.

`(18x^(-2)y^(2))/(2x^(2) y) = ((18x^(-2)y^(2))*(x^(-2)y^(-1)))/(2) = 9(x^(-4) y^(1))`