x^2+x^2+9=169

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Solution for x^2+x^2+9=169 equation:


Simplifying
x2 + x2 + 9 = 169

Reorder the terms:
9 + x2 + x2 = 169

Combine like terms: x2 + x2 = 2x2
9 + 2x2 = 169

Solving
9 + 2x2 = 169

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 2x2 = 169 + -9

Combine like terms: 9 + -9 = 0
0 + 2x2 = 169 + -9
2x2 = 169 + -9

Combine like terms: 169 + -9 = 160
2x2 = 160

Divide each side by '2'.
x2 = 80

Simplifying
x2 = 80

Take the square root of each side:
x = {-8.94427191, 8.94427191}

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