Question 185377
Use the discriminant to describe the roots of the equation:  16x^2=25
It seems like there are a few numbers missing.  What do I do?

Subtract 25 from both sides.

16x^2 - 25 = 0

This tells me that a = 16, b = 0 and c = -25

When a variable is missing, replace that variable with 0.

Here is the discriminant: b^2 - 4ac

We now plug and chug.

Can you finish now?