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Simplifying
5x2 + 16 + -84 = 0
Reorder the terms:
16 + -84 + 5x2 = 0
Combine like terms: 16 + -84 = -68
-68 + 5x2 = 0
Solving
-68 + 5x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '68' to each side of the equation.
-68 + 68 + 5x2 = 0 + 68
Combine like terms: -68 + 68 = 0
0 + 5x2 = 0 + 68
5x2 = 0 + 68
Combine like terms: 0 + 68 = 68
5x2 = 68
Divide each side by '5'.
x2 = 13.6
Simplifying
x2 = 13.6
Take the square root of each side:
x = {-3.687817783, 3.687817783}
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