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Simplifying
7 = 0.022x2 + 0.25
Reorder the terms:
7 = 0.25 + 0.022x2
Solving
7 = 0.25 + 0.022x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-0.022x2' to each side of the equation.
7 + -0.022x2 = 0.25 + 0.022x2 + -0.022x2
Combine like terms: 0.022x2 + -0.022x2 = 0.000
7 + -0.022x2 = 0.25 + 0.000
7 + -0.022x2 = 0.25
Add '-7' to each side of the equation.
7 + -7 + -0.022x2 = 0.25 + -7
Combine like terms: 7 + -7 = 0
0 + -0.022x2 = 0.25 + -7
-0.022x2 = 0.25 + -7
Combine like terms: 0.25 + -7 = -6.75
-0.022x2 = -6.75
Divide each side by '-0.022'.
x2 = 306.8181818
Simplifying
x2 = 306.8181818
Take the square root of each side:
x = {-17.516226243, 17.516226243}
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