Question

(1)32x^3-2x (2)-14xy-x^2-49y^2

Answer 1

(1)32x^3-2x

=2x(16x^2-1)

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

(2)-14xy-x^2-49y^2

=-(x^2+14xy+49y^2)

=-(x+7y)^2;

(3)x^3-xy^2

=x(x^2-y^2)

=x(x+y)(x-y);

(4)x^3-6x^2+9x

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

=x(x-3)^2.