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Simplifying
16 + -9 = x2
Combine like terms: 16 + -9 = 7
7 = x2
Solving
7 = 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.
7 + -1x2 = x2 + -1x2
Combine like terms: x2 + -1x2 = 0
7 + -1x2 = 0
Add '-7' to each side of the equation.
7 + -7 + -1x2 = 0 + -7
Combine like terms: 7 + -7 = 0
0 + -1x2 = 0 + -7
-1x2 = 0 + -7
Combine like terms: 0 + -7 = -7
-1x2 = -7
Divide each side by '-1'.
x2 = 7
Simplifying
x2 = 7
Take the square root of each side:
x = {-2.645751311, 2.645751311}
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