Pls factorise - a (a – 2) – b (b - 2)
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Answer:
a(a-2)-b(b-2)
=>a^2-b^2-2a-2b
=>a^2-b^2-2(a+b)
=>(a+b)(a-b)-2(a-b)
=>(a-b)(a+b-2)
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