You can put this solution on YOUR website! (6u^2-60u+144)/(u^2-5u+4) now factor both equations
6u^2-60u+144
6(u^2-10u+24)
6(u-6)(u-4) now factor the denominator
u^2-5u+4
(u-4)(u-1) now reconstruct the fraction thus
6(u-6)(u-4)/(u-4)(u-1) we have a common factor in both the numerator & denominator and can be factored out of both thus
6(u-6)/(u-1)