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Simplifying
-1x2 + 6x2 + -9 = 0
Reorder the terms:
-9 + -1x2 + 6x2 = 0
Combine like terms: -1x2 + 6x2 = 5x2
-9 + 5x2 = 0
Solving
-9 + 5x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation.
-9 + 9 + 5x2 = 0 + 9
Combine like terms: -9 + 9 = 0
0 + 5x2 = 0 + 9
5x2 = 0 + 9
Combine like terms: 0 + 9 = 9
5x2 = 9
Divide each side by '5'.
x2 = 1.8
Simplifying
x2 = 1.8
Take the square root of each side:
x = {-1.341640787, 1.341640787}
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