Question

miim ajudaaa (x-5).(x-6).-(x-2).(x-3)

Answer 1

$(x-5).(x-6).-(x-2).(x-3) \\ ( x^{2} -11x+30).-( x^{2} -5x+6) \\ ( x^{2} -11x+30).(-x^{2} +5x-6) \\ - x^{4} +5 x^{3} -6 x^{2} +11 x^{3} -55 x^{2} +66x-30 x^{2} +150x-180 \\ - x^{4} +16 x^{3}-91 x^{2} +216x-180$