Factorise by the Grouping Method: a (A -4) - a + 4 - Mathematics

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

Sum

a (a -4) - a + 4
= a( a - 4 ) -1( a - 4 )
= ( a - 4 )( a - 1 )

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Factorisation by Grouping

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Chapter 5: Factorisation - Exercise 5 (A) [Page 69]

Chapter 5 Factorisation
Exercise 5 (A) | Q 14 | Page 69

Factorise by the grouping method : a³ + a - 3a² - 3

Factorise by the grouping method:

ab (x² + 1) + x (a² + b²)

Factorise using the grouping method :
m (x - 3y)² + n (3y - x) + 5x - 15y

Factorise : a² - ab - ca + bc

Factorise : ab² - (a - c) b - c

factorise: x² - x - 72

factorise: 3a² - 5a + 2

factorise: 1 - 3x - 3y - 4(x + y)²

Factorise the following by grouping the terms:
15xy - 9x - 25y + 15

Factorise the following by grouping the terms:

`(1)/(25x^2) + 16x^2 + (8)/(5) - 12x - (3)/(5x)`