17*17=8*8+x*x

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Solution for 17*17=8*8+x*x equation: 


Simplifying
17 * 17 = 8 * 8 + x * x

Multiply 17 * 17
289 = 8 * 8 + x * x

Multiply 8 * 8
289 = 64 + x * x

Multiply x * x
289 = 64 + x2

Solving
289 = 64 + x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x2' to each side of the equation.
289 + -1x2 = 64 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
289 + -1x2 = 64 + 0
289 + -1x2 = 64

Add '-289' to each side of the equation.
289 + -289 + -1x2 = 64 + -289

Combine like terms: 289 + -289 = 0
0 + -1x2 = 64 + -289
-1x2 = 64 + -289

Combine like terms: 64 + -289 = -225
-1x2 = -225

Divide each side by '-1'.
x2 = 225

Simplifying
x2 = 225

Take the square root of each side:
x = {-15, 15}

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