Question

Solve the equation for x

Answer 1

`y=x^2-18\ \ \ \ |\text{add 18 to both sides}\\\\y+18=x^2\ \ \ \ |\text{square roth of both sides}\\\\√(x^2)=√(y+18)\to|x|=√(y+18)\\\\x=\pm√(y+18)\\\\Answer:\ A.\ x=\pm√(y+18)`