Factorise: X2 - X - 72 - Mathematics

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 : a (a -4) - a + 4

Factorize using the grouping method:

x² + y² + x + y + 2xy

Factorise : 3x⁵ - 6x⁴ - 2x³ + 4x² + x - 2

Factorise: 7b² - 8b + 1

factorise: 4c² + 3c - 10

factorise: 1 − (2x + 3y) − 6(2x + 3y)²

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

Factorise the following by grouping the terms:
9 + 3xy + x²y + 3x

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