Mathematics
Factorise the following:
a(b - c)(b + c) - d(c - b)
Factorisation
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Answer
a(b - c)(b + c) - d(c - b) = a(b - c)(b + c) - d(-1)(b - c)
= a(b - c)(b + c) + d(b - c)
= (b - c)[a(b + c) + d]
Hence, a(b - c)(b + c) - d(c - b) = (b - c)[a(b + c) + d].
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