Question

SOS1) x^3-7x+62) x^5-2x^4-3x^3+x^2-2x-3

Answer 1

(1)x^3 -7x +6

=x^3-x-6(x-1)

=x(x+1)(x-1)-6(x-1)

=(x-1)(x*x+x-6)

=(x-1)(x+3)(x-2)

2) x^5-2x^4-3x^3+x^2-2x-3

=x^3(x^2-2x-3)+(x^2-2x-3)

=(x^3+1)(x-3)(x+1)