Question

Find 27 x^3-135 x² + 225x - 125
by using identity​

Answer 1

Answer:

⇔(a-b)^3=a^3-b^3-3*a^2*b+3*a*b^2

27-125 a3 - 135 a+225 a2

=3^3-(5a)^3-3*3^2*5a+3*3*(5a)^2

=(3-5a)^3

=(3-5a)(3-5a)(3-5a)