a squared +20 squared = 25 squared

A squared plus 20 squerd equals 25 squarrd
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1 Answer

a^2 + 20^2 = 25^2                          You have to solve for a
a^2 +400=625                                 Expand 20 squared and 25 squared
a^2=625-400
a^2=225
a=square root of 225
a=15 or a=-15
by Level 1 User (700 points)

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