-1-(-5x)-2x+2x^2+7=

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Solution for -1-(-5x)-2x+2x^2+7= equation:


Simplifying
-1 + -1(-5x) + -2x + 2x2 + 7 = 0

Remove parenthesis around (-5x)
-1 + -1 * -5x + -2x + 2x2 + 7 = 0

Multiply -1 * -5
-1 + 5x + -2x + 2x2 + 7 = 0

Reorder the terms:
-1 + 7 + 5x + -2x + 2x2 = 0

Combine like terms: -1 + 7 = 6
6 + 5x + -2x + 2x2 = 0

Combine like terms: 5x + -2x = 3x
6 + 3x + 2x2 = 0

Solving
6 + 3x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
3 + 1.5x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + 1.5x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + 1.5x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 1.5x + x2 = 0 + -3
1.5x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
1.5x + x2 = -3

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = -3 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = -3 + 0.5625

Combine like terms: -3 + 0.5625 = -2.4375
0.5625 + 1.5x + x2 = -2.4375

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = -2.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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