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Simplifying
(-3) = x2 + -16
-3 = x2 + -16
Reorder the terms:
-3 = -16 + x2
Solving
-3 = -16 + 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.
-3 + -1x2 = -16 + x2 + -1x2
Combine like terms: x2 + -1x2 = 0
-3 + -1x2 = -16 + 0
-3 + -1x2 = -16
Add '3' to each side of the equation.
-3 + 3 + -1x2 = -16 + 3
Combine like terms: -3 + 3 = 0
0 + -1x2 = -16 + 3
-1x2 = -16 + 3
Combine like terms: -16 + 3 = -13
-1x2 = -13
Divide each side by '-1'.
x2 = 13
Simplifying
x2 = 13
Take the square root of each side:
x = {-3.605551275, 3.605551275}
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