15x^2-60=-15

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Solution for 15x^2-60=-15 equation:


Simplifying
15x2 + -60 = -15

Reorder the terms:
-60 + 15x2 = -15

Solving
-60 + 15x2 = -15

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '60' to each side of the equation.
-60 + 60 + 15x2 = -15 + 60

Combine like terms: -60 + 60 = 0
0 + 15x2 = -15 + 60
15x2 = -15 + 60

Combine like terms: -15 + 60 = 45
15x2 = 45

Divide each side by '15'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}

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