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Simplifying
3.75 = 3x2 + -3
Reorder the terms:
3.75 = -3 + 3x2
Solving
3.75 = -3 + 3x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3x2' to each side of the equation.
3.75 + -3x2 = -3 + 3x2 + -3x2
Combine like terms: 3x2 + -3x2 = 0
3.75 + -3x2 = -3 + 0
3.75 + -3x2 = -3
Add '-3.75' to each side of the equation.
3.75 + -3.75 + -3x2 = -3 + -3.75
Combine like terms: 3.75 + -3.75 = 0.00
0.00 + -3x2 = -3 + -3.75
-3x2 = -3 + -3.75
Combine like terms: -3 + -3.75 = -6.75
-3x2 = -6.75
Divide each side by '-3'.
x2 = 2.25
Simplifying
x2 = 2.25
Take the square root of each side:
x = {-1.5, 1.5}
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