Question

factorise each with the identity
1. 9x square+6xy+y square
2. 4y square-4y+1
3. x square-y square upon 100

Answer 1

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Answer 2

1.9x^2+6xy+y^2
(3x)^2+2.3x.y+y^2 ( using (a+b)^2)
(3x+y)^2 is the factorised term

2. 4y^2-4y+1
2y^2- 2.2y.1+1^2. ( using (a-b)^2)
( 2y-1)^2 is the answer