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Simplifying
4x2 + 18 = 25
Reorder the terms:
18 + 4x2 = 25
Solving
18 + 4x2 = 25
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-18' to each side of the equation.
18 + -18 + 4x2 = 25 + -18
Combine like terms: 18 + -18 = 0
0 + 4x2 = 25 + -18
4x2 = 25 + -18
Combine like terms: 25 + -18 = 7
4x2 = 7
Divide each side by '4'.
x2 = 1.75
Simplifying
x2 = 1.75
Take the square root of each side:
x = {-1.322875656, 1.322875656}
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