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Simplifying
4x2 + -43 = 25
Reorder the terms:
-43 + 4x2 = 25
Solving
-43 + 4x2 = 25
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '43' to each side of the equation.
-43 + 43 + 4x2 = 25 + 43
Combine like terms: -43 + 43 = 0
0 + 4x2 = 25 + 43
4x2 = 25 + 43
Combine like terms: 25 + 43 = 68
4x2 = 68
Divide each side by '4'.
x2 = 17
Simplifying
x2 = 17
Take the square root of each side:
x = {-4.123105626, 4.123105626}
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