Question

factorising 5x²-21x+18 please​

Answer 1

Answer:

5x^2 - 21x + 18

=> 5x^2 - (15 + 6)x + 18

=> 5x^2 - 15x - 6x + 18

=> 5x(x - 3) - 6(x - 3)

=> (5x - 6) (x - 3)

Ans. (5x - 6) (x - 3)

Hope it helps.

Answer 2

$= 5 {x}^{2} - 21 + 18$

$= 5 {x}^{2} - (15 + 6)x + 18$

$= 5 {x}^{2} - 15x - 6x + 18$

$= 5x(x - 3) - 6(x - 3)$

$= (5x - 6)(x - 3)$