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Simplifying
4x2 + -3 = 18
Reorder the terms:
-3 + 4x2 = 18
Solving
-3 + 4x2 = 18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '3' to each side of the equation.
-3 + 3 + 4x2 = 18 + 3
Combine like terms: -3 + 3 = 0
0 + 4x2 = 18 + 3
4x2 = 18 + 3
Combine like terms: 18 + 3 = 21
4x2 = 21
Divide each side by '4'.
x2 = 5.25
Simplifying
x2 = 5.25
Take the square root of each side:
x = {-2.291287847, 2.291287847}
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