Question

Answer 1

a,=\(x^2-x-6x+6\)

=\(x\left(x-1\right)-6\left(x-1\right)\)

=\(\left(x-6\right)\left(x-1\right)\)

Answer 2

b: =(x+7)(x+5)

c: =x^2-8x+7x-56=(x-8)(x+7)

d: =5x^2-5x+4x-4=(x-1)(5x+4)

g: =4x^4+1+4x^2-4x^2

=(2x^2+1)^2-4x^2

=(2x^2-2x+1)(2x^2+2x+1)

h: =4x^4+81+36x^2-36x^2

=(2x^2+9)^2-36x^2

=(2x^2-6x+9)(2x^2+6x+9)