How do you solve 2x^2 + 10 =210?

1 Answer
Apr 11, 2018

x=+-10

Explanation:

"subtract 10 from both sides"

rArr2x^2=200

"divide both sides by 2"

rArrx^2=100

color(blue)"take the square root of both sides"

rArrx=+-sqrt100larrcolor(blue)"note plus or minus"

rArrx=+-10