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Simplifying
8 + -12x2 + 5 + 3x2 = 0
Reorder the terms:
8 + 5 + -12x2 + 3x2 = 0
Combine like terms: 8 + 5 = 13
13 + -12x2 + 3x2 = 0
Combine like terms: -12x2 + 3x2 = -9x2
13 + -9x2 = 0
Solving
13 + -9x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-13' to each side of the equation.
13 + -13 + -9x2 = 0 + -13
Combine like terms: 13 + -13 = 0
0 + -9x2 = 0 + -13
-9x2 = 0 + -13
Combine like terms: 0 + -13 = -13
-9x2 = -13
Divide each side by '-9'.
x2 = 1.444444444
Simplifying
x2 = 1.444444444
Take the square root of each side:
x = {-1.201850425, 1.201850425}
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