Solve for c 15^2+20^2=c^2

Math
152+202=c2
Rewrite the equation as c2=152+202.
c2=152+202
Take the square root of both sides of the equation to eliminate the exponent on the left side.
c=±152+202
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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Raise 15 to the power of 2.
c=±225+202
Raise 20 to the power of 2.
c=±225+400
Add 225 and 400.
c=±625
Rewrite 625 as 252.
c=±252
Pull terms out from under the radical, assuming positive real numbers.
c=±25
c=±25
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.
c=25
Next, use the negative value of the ± to find the second solution.
c=-25
The complete solution is the result of both the positive and negative portions of the solution.
c=25,-25
c=25,-25
c=25,-25
Solve for c 15^2+20^2=c^2

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