Question

Which expression gives the solutions to the equation 2x^2 + 5x – 10 = 0?

Answer 1

Answer:

D.

Step-by-step explanation:

The formula to find the solutions of a quadratic equation is -b plus or minus the square root of b^2 - 4ac divided by 2a. In this case, a = 2, b = 5, and c = -10.

$\frac{-b +-\sqrt{b^2 - 4ac} }{2a}$

= $\frac{-5 +-\sqrt{5^2 - 4*2*-10} }{2 * 2}$

So, the right answer should be the choice on the lower right corner.

Hope this helps!