Factorise the following expression:121b2 - 88bc + 16c2
Factorise the following expression:(l+m)2 - 4lm
Factorise the following expression:
Factorise:
Factorise:(l + m)2 - (l-m)2
Factorise:9x2y2 - 16
We have 9x2y2 - 16 = (3xy)2 - (4)2 = (3xy + 4)(3xy - 4) [Using a2 -b2= (a + b)(a - b)]
∴ 9x2y2 - 16 = (3xy + 4) (3xy - 4)
Factorise:(x2 - 2xy + y2) - z2