SOLUTION: Please show work. Consider the quadratic equations: x^2-2=0 Solve quadratic equation above by extracting square roots completing the square by applying the formula

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: Please show work. Consider the quadratic equations: x^2-2=0 Solve quadratic equation above by extracting square roots completing the square by applying the formula       Log On


   

Question 1019895: Please show work.
Consider the quadratic equations:
x^2-2=0
Solve quadratic equation above by
extracting square roots
completing the square
by applying the formula
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x^2=2
x= +/- sqrt (2)
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x^2-2=0
(x-sqrt(2))^2=0
x=+/- sqrt (2)
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x=(1/2)(0+/- sqrt (0+8)
This is (1/2)*+/- 2 sqrt(2)
That is +/-sqrt (2)