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Simplifying
3x2 + -5 = 28
Reorder the terms:
-5 + 3x2 = 28
Solving
-5 + 3x2 = 28
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + 3x2 = 28 + 5
Combine like terms: -5 + 5 = 0
0 + 3x2 = 28 + 5
3x2 = 28 + 5
Combine like terms: 28 + 5 = 33
3x2 = 33
Divide each side by '3'.
x2 = 11
Simplifying
x2 = 11
Take the square root of each side:
x = {-3.31662479, 3.31662479}
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