Use the quadratic formula to solve for x.
2x^2+6x=−1
round your answer to the nearest hundredth.
if there is more than one solution, separate them with commas.

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

How to do this , and can some one explain