Factorise: 5 - 4x(1 + 3x)

factorise: 5 - 4x(1 + 3x)

Sum

5 - 4x(1 + 3x)

= 5 - 4x - 12x²

= 5 - 10x + 6x - 12x²

= 5(1 - 2x)+ 6x (1 - 2x)

= (1 - 2x)(5 + 6x)

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Factorisation by Grouping

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Chapter 13: Factorisation - Exercise 13 (F) [Page 163]

Chapter 13 Factorisation
Exercise 13 (F) | Q 4.6 | Page 163

Factorise by the grouping method:

ab (x² + 1) + x (a² + b²)

Factorise by the grouping method : a (a -4) - a + 4

Factorise using the grouping method :
a² + 4b² - 3a + 6b - 4ab

Factorise : 2ab² - aby + 2cby - cy²

factorise: a² - 5a+ 6

factorise: a² − 3a − 40

factorise: 2a² - 17ab + 26b²

factorise: 5x² - 4xy - 12y²

Factorise the following by grouping the terms:
15x² + 7y - 3x - 35xy

Factorise the following by grouping the terms:
8x³ - 24x²y + 54xy² -162y³