(i) 2x4 – 32
(ii) a2(b + c) – (b + c)3
Answer:
(i) 2x4 – 32
Take out common in all terms,
2(x4 – 16)
Above terms can be written as,
2((x2)2 – 42)
We know that, a2 – b2 = (a + b) (a – b)
2(x2 + 4) (x2 – 4)
2(x2 + 4) (x2 – 22)
2(x2 + 4) (x + 2) (x – 2)
(ii) a2(b + c) – (b + c)3
a2(b + c) – (b + c)3
Take out common in all terms,
(b + c) (a2 – (b + c)2)
We know that, a2 – b2 = (a + b) (a – b)
(b + c) (a + b + c) (a – b – c)
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