Question

Simplify using suitable identities:
i) ( xy – yz )2 – 2xy2
z
ii) [ ( 2x + 3 ) ( 2x + 5 ) ] – 4x
iii) ( 5y – 2 ) ( 5y + 2 )

Answer 1

Answer:

iii) ( 5y – 2 ) ( 5y + 2 )

((5y)²-2²)

25y²-4