Q3 Factorise the following expressions 

(IV)

am^2 + bm ^2 + bn ^2 + an^2

Answers (1)

We have,
              am^2 + bm ^2 + bn ^2 + an^2  = m^2(a + b) + n^2(a + b)
                                                                    = (a + b)(m^{2 }+n^{2})

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