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Simplifying
4 = 5x2 + -4
Reorder the terms:
4 = -4 + 5x2
Solving
4 = -4 + 5x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5x2' to each side of the equation.
4 + -5x2 = -4 + 5x2 + -5x2
Combine like terms: 5x2 + -5x2 = 0
4 + -5x2 = -4 + 0
4 + -5x2 = -4
Add '-4' to each side of the equation.
4 + -4 + -5x2 = -4 + -4
Combine like terms: 4 + -4 = 0
0 + -5x2 = -4 + -4
-5x2 = -4 + -4
Combine like terms: -4 + -4 = -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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