Mathematics
Factorise :
5 - 4x(1 + 3x)
Factorisation
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Answer
5 - 4x(1 + 3x)
= 5 - 4x - 12x2
= 5 - (10 - 6)x - 12x2
= 5 - 10x + 6x - 12x2
= (5 - 10x) + (6x - 12x2)
= 5(1 - 2x) + 6x(1 - 2x)
= (1 - 2x)(5 + 6x)
Hence,5 - 4x(1 + 3x) = (1 - 2x)(5 + 6x)
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