Question

Factorise the following expressions:
1) x^2-1/9
2) 4/25m^2 - 64
3) x^2/9 - y^2/4
4) 36/a^2 - 25/b^2
5) x^2 - 0.01
6) 81-(x-7)^2

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Answer 1

Answer:

See this.

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Step-by-step explanation:

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