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Simplifying
x2 + -1.8 + 0.81 = 0
Reorder the terms:
-1.8 + 0.81 + x2 = 0
Combine like terms: -1.8 + 0.81 = -0.99
-0.99 + x2 = 0
Solving
-0.99 + x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '0.99' to each side of the equation.
-0.99 + 0.99 + x2 = 0 + 0.99
Combine like terms: -0.99 + 0.99 = 0.00
0.00 + x2 = 0 + 0.99
x2 = 0 + 0.99
Combine like terms: 0 + 0.99 = 0.99
x2 = 0.99
Simplifying
x2 = 0.99
Take the square root of each side:
x = {-0.994987437, 0.994987437}
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