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Simplifying
-5x2 + 12 + -4 = 0
Reorder the terms:
12 + -4 + -5x2 = 0
Combine like terms: 12 + -4 = 8
8 + -5x2 = 0
Solving
8 + -5x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-8' to each side of the equation.
8 + -8 + -5x2 = 0 + -8
Combine like terms: 8 + -8 = 0
0 + -5x2 = 0 + -8
-5x2 = 0 + -8
Combine like terms: 0 + -8 = -8
-5x2 = -8
Divide each side by '-5'.
x2 = 1.6
Simplifying
x2 = 1.6
Take the square root of each side:
x = {-1.264911064, 1.264911064}
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