Factorise the following using appropriate identities: [4 MARKS]
1)9x2+6xy+y2
2)4y2−4y+1
Formula: 1 Mark each
Substitution: 1 Mark
Factorisation: 1 Mark
1) 9x2+6xy+y2
=(3x)2+2(3x)(y)+(y)2......(i)
a2+2ab+b2=(a+b)2
[Comparing equation (i) with the above identity, we get]
a=3x,b=y,