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Question
Factorise the expression.
am2 + bm2 + bn2 + an2
Sum
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Solution
am2 + bm2 + bn2 + an2
= m2(a + b) + n2(a + b)
= (a + b) (m2 + n2)
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Chapter 12: Factorisation - EXERCISE 12.2 [Page 151]
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