How to factorise using a2– b 2(a+b)(a-b) identities  9s – 4s3

Asked by surendra.suri | 30th Sep, 2020, 07:42: PM

Expert Answer:

9s - 4s3 
= s(9 - 4s2)
= s[(3)2 - (2s)2]
= s(3-2s)(3+2s)           ........(a2 - b2)  = (a - b)(a + b)

Answered by Yasmeen Khan | 1st Oct, 2020, 11:43: AM