Solve Using the Square Root Property x^2+144=400

Math
x2+144=400
Move all terms not containing x to the right side of the equation.
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Subtract 144 from both sides of the equation.
x2=400-144
Subtract 144 from 400.
x2=256
x2=256
Take the square root of both sides of the equation to eliminate the exponent on the left side.
x=±256
The complete solution is the result of both the positive and negative portions of the solution.
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Simplify the right side of the equation.
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Rewrite 256 as 162.
x=±162
Pull terms out from under the radical, assuming positive real numbers.
x=±16
x=±16
The complete solution is the result of both the positive and negative portions of the solution.
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First, use the positive value of the ± to find the first solution.
x=16
Next, use the negative value of the ± to find the second solution.
x=-16
The complete solution is the result of both the positive and negative portions of the solution.
x=16,-16
x=16,-16
x=16,-16
Solve Using the Square Root Property x^2+144=400

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