Factorise: X2 - X - 72

factorise: x² - x - 72

बेरीज

x² - x - 72

= x2 - 9x + 8x - 72

= x(x - 9) + 8(x - 9)

= (x - 9)(x + 8)

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Factorisation by Grouping

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पाठ 13: Factorisation - Exercise 13 (D) [पृष्ठ १६१]

पाठ 13 Factorisation
Exercise 13 (D) | Q 8 | पृष्ठ १६१

Factorise by the grouping method:

ab (x² + 1) + x (a² + b²)

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

Factorise : a³ -a² +a -1

Factorise : x² - (a - 3)x - 3a

Factorise : ab² - (a - c) b - c

factorise: x² - 10xy + 24y²

factorise: 2a² - 17ab + 26b²

factorise: b(c - d)² + a(d - c) + 3(c - d)

Factorise the following by grouping the terms:
4abx² + 49aby² + 14xy(a² + b²)

Factorise the following by grouping the terms:

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