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5) [x^2/(x + 6)] [(x^2 + x - 30)/(x^2 - 2x)]
Multiplication and simplify
[x^2/(x+6)][(x^2+x-30)/(x^2-2x)]
[x^2/(x+6)][ (x^2+6x-5x-30)/x(x-2)]
[x^2/(x+6)][x(x+6)-5(x+6)/x(x-2)]
[x^2/(x+6)][(x+6).(x-5)/x.(x-2)]
x^2.(x+6).(x-5)/(x+6).x.(x-2)
= x.(x-5)/(x-2)