Question

Factorise the following expressions:
1. x2yz + xy2z + xyz2
2. 121b2 - 88bc + 16c2

Answer 1

Answer:

1.xyz ( x+y+z )

2.( 11b )2 - 2×11b×4c + ( 4c )2

= ( 11b+4c )2

= [ a+b ]2