Question

One of the roots of the equation 2x^2-bx-20=0 is -2.5. find the other root

Answer 1

Here is an actual answer.

(2x + z)(x + 2.5).

Explanation:

In general, a quadratic equation in standard form is: ax2 + bx + c and other stuff I forget.Therefore, from 2x2 - bx -20, we obtain: (2x + z)(x + 2.5).