Answer :

(i) x × x + x × y

taking x in common,


= x(x + y)


(ii) 3 × x × x–6 × x


taking 3 x in common,


= 3x(x–2)


(iii) 2 × 0.8 × a × a–0.8 × a


taking 0.8a in common,


= 0.8a(2a–1)


(iv) 5–5 × 2 × m–5 × 4 × n


taking 5 in common,


= 5(1–2m–4n)


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