Question

Factorise 2x 2 -11x+15

Answer 1

2x2 -11x+15
2x2 -6x-5x+15
2x (x-3)-5 (x-3)
(x-3)(2x-5)
x=3
x=5/2

Answer 2

hi mate,

solution:

Factoring 2x²-11x+15

2x² - 6x - 5x - 15

Step-1 : Add up the first 2 terms, pulling out like factors :

2x • (x-3)

Add up the last 2 terms, pulling out common factors :

5 • (x-3)

Step-2 : Add up the four terms of step 1 :

(2x-5) • (x-3)

Which is the desired factorization

Final result :

(x - 3) • (2x - 5)

x -3=0 and 2x-5=0

x=3 and x= 5/2

I hope it helps you.