-3(x)=x^2-3x-7

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Solution for -3(x)=x^2-3x-7 equation: 


Simplifying
-3(x) = x2 + -3x + -7

Reorder the terms:
-3x = -7 + -3x + x2

Add '3x' to each side of the equation.
-3x + 3x = -7 + -3x + 3x + x2

Combine like terms: -3x + 3x = 0
0 = -7 + -3x + 3x + x2

Combine like terms: -3x + 3x = 0
0 = -7 + 0 + x2
0 = -7 + x2

Solving
0 = -7 + x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
0 + -1x2 = -7 + x2 + -1x2
Remove the zero:
-1x2 = -7 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-1x2 = -7 + 0
-1x2 = -7

Divide each side by '-1'.
x2 = 7

Simplifying
x2 = 7

Take the square root of each side:
x = {-2.645751311, 2.645751311}

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