Question

Factorise using identities:
1. a^2y^2 – 2aby + b^2
2. x^2 – 9
3. 4x^2 – 49y^2

Answer 1

Answer:

abx

2

−aby

2

+xya

2

−xyb

2

abx

2

+xya

2

−aby

2

−xyb

2

ax(bx+ay)−by(ay+bx)

=(ax−by)(bx+ay)

Answer 2

Step-by-step explanation:

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