Factorise :

36x^4-72x^2y^2+36y^2

Asked by Cl_narayan | 9th Jan, 2020, 01:20: PM

Expert Answer:

Question should be 36x4-72x2y2+36y4.
 
36x4-72x2y2+36y4
 = 36(x4-2x2y2+y4)
= 36(x2 - y2)2
=  2 × 2 × 3 × 3 × (x2 - y2)×(x2 - y2)
=  2 × 2 × 3 × 3 × (x - y)× (x + y)× (x - y)× (x + y)

Answered by Yasmeen Khan | 10th Jan, 2020, 10:30: AM