Question

1. Express the following as in the form of (a+b)(a-b)
(i) a² – 64
(ii) 20a² – 45b²
(iii) 32x²y² – 8
(iv) x² – 2xy + y² – z²
(v) 49x² – 1​

Explain it

Answer 1

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Answer 2

Answer:

1. (a-8) (a+8)

2. 5 (4a²-9b²) = 5 (2a+3b) (2a-3b)

3. 6xy-2√2) (6xy+2√2)

4. (x-y)² - 2² = (x-y-2) (x-y+2)

5. (7x-1) (7x+1)