Scan QR code or get instant email to install app
Question:
If \(x^2-4=45\), then x could be equal to _________.
A
\(-7\)
explanation
\(x^2=49\). When you take the square root of a number, the answer is the positive and negative values of the root. Therefore, \(x = 7\) and \(x = -7\). Only \(-7\) is an answer choice.
Take more free practice tests for other GED topics with our ged online now!
Related Information
Comments