Question

:) (x - 5) (x2 – 5x +25)-(x-4)(x2 - 4x+16)​

Answer 1

Answer:

(x-5)(x^2-5x+25)=x^3-10x^2+50x-125

(x-4)(x^2-4x+16)=x^3-8x^2+32x-64

Now,(x-5)(x^2-5x+25)-(x-4)(x^2-4x+16)

=x^3-10x^2+50x-125-x^3+8x^2-32x+64

=(-2x^2+18x-61)

= -(2x^2-18x+61)