Question

factorise the following: 4x² + x - 18​

Answer 1

Answer:

$=(x - 2)(4x + 9)$

Step-by-step explanation:

$4x^{2} + x - 18\\= 4x^{2} + 9x - 8x - 18\\= (4x^{2} + 9x)+ (- 8x - 18)\\= x(4x + 9) -2(4x + 9)\\=(x - 2)(4x + 9)$