144+x^2=400

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Solution for 144+x^2=400 equation: 


Simplifying
144 + x2 = 400

Solving
144 + x2 = 400

Solving for variable 'x'.

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

Add '-144' to each side of the equation.
144 + -144 + x2 = 400 + -144

Combine like terms: 144 + -144 = 0
0 + x2 = 400 + -144
x2 = 400 + -144

Combine like terms: 400 + -144 = 256
x2 = 256

Simplifying
x2 = 256

Take the square root of each side:
x = {-16, 16}

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