Question

find the zeroes of 2x square -15 -11x​

Answer 1

The zeroes are 3 and 5/2.

We consider p(X)= (2x)2 -11x -15

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.