Factorise: 15(5x - 4)2 - 10(5x - 4)

factorise: 15(5x - 4)² - 10(5x - 4)

Sum

15(5x - 4)² - 10(5x - 4)

= 5(5x - 4) [3(5x - 4) - 2]

= 5 (5x - 4) (15x - 12 - 2)

= 5 (5x - 4) (15x - 14)

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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 5.1 | Page 163

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

Factorise : - x²y - x + 3xy + 3

Factorise : x² - (a - 3)x - 3a

Factorise : ab² - (a - c) b - c

factorise: x² + 4x + 3

factorise: (3x - 2y)² - 5(3x - 2y) - 24

factorise: 12(a + b)² - (a+ b) - 35

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

Factorise the following by grouping the terms:
2a + b + 3c - d + (2a + b)³ + (2a + b)²(3c - d)

Factorise the following by grouping the terms:
x + y + m(x + y)