Factorise: X2 - X - 72

factorise: x² - x - 72

योग

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

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

Factorise by the grouping method : ab - 2b + a² - 2a

Factorise by the grouping method : a² + b - ab - a

Factorise by the grouping method : (ax + by)² + (bx - ay)²

Factorise : (a² − b²) c + (b² − c²)a

Factorise : 2ab²c - 2a + 3b³c - 3b - 4b²c² + 4c

factorise: x² + 6x + 8

factorise: a² - 23a + 42

factorise: ax² + b²y - ab² - x²y

Factorise the following by grouping the terms:
x(x - 4)- x + 4

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