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Simplifying
-16x2 + 84 = 0
Reorder the terms:
84 + -16x2 = 0
Solving
84 + -16x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-84' to each side of the equation.
84 + -84 + -16x2 = 0 + -84
Combine like terms: 84 + -84 = 0
0 + -16x2 = 0 + -84
-16x2 = 0 + -84
Combine like terms: 0 + -84 = -84
-16x2 = -84
Divide each side by '-16'.
x2 = 5.25
Simplifying
x2 = 5.25
Take the square root of each side:
x = {-2.291287847, 2.291287847}
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