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 : 6a² - 3a²b - bc² + 2c²

Factorise: 7b² - 8b + 1

factorise: (2a + b)² + 5(2a + b) + 6

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

factorise: 12(a + b)² - (a+ b) - 35

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

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

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

Factorise the following by grouping the terms:
2m³ - 5n² - 5m²n + 2mn

Factorise the following by grouping the terms:

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