Factorise the following using appropriate identities:

MATHEMATICS · Multi-part · AoPS · Mathematics · Special Factorizations · Special Factorizations

Problem

3. Factorise the following using appropriate identities: (i)

9 x^{2}+6 x y+y^{2}

(ii)

4 y^{2}-4 y+1

(iii)

x^{2}-\frac{y^{2}}{100}