Q. Solve for all real values of x.x2−8=0Answer: x=
Set up equation: Set up the equation to solve for x. We have the equation x2−8=0. To find the values of x, we need to isolate x on one side of the equation.
Add 8: Add 8 to both sides of the equation to isolate the x2 term.x2−8+8=0+8This simplifies to:x2=8
Take square root: Take the square root of both sides of the equation to solve for x.x=±8
Simplify square root: Simplify the square root of 8.Since 8 is 4 times 2 and the square root of 4 is 2, we can simplify 8 to 22.x=±22
More problems from Solve a quadratic equation using square roots