5x^2-2=-9+7x

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Solution for 5x^2-2=-9+7x equation:


Simplifying
5x2 + -2 = -9 + 7x

Reorder the terms:
-2 + 5x2 = -9 + 7x

Solving
-2 + 5x2 = -9 + 7x

Solving for variable 'x'.

Reorder the terms:
-2 + 9 + -7x + 5x2 = -9 + 7x + 9 + -7x

Combine like terms: -2 + 9 = 7
7 + -7x + 5x2 = -9 + 7x + 9 + -7x

Reorder the terms:
7 + -7x + 5x2 = -9 + 9 + 7x + -7x

Combine like terms: -9 + 9 = 0
7 + -7x + 5x2 = 0 + 7x + -7x
7 + -7x + 5x2 = 7x + -7x

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

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

Divide each side by '5'.
1.4 + -1.4x + x2 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + -1.4x + -1.4 + x2 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + -1.4x + x2 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + -1.4x + x2 = 0 + -1.4
-1.4x + x2 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
-1.4x + x2 = -1.4

The x term is -1.4x.  Take half its coefficient (-0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
-1.4x + 0.49 + x2 = -1.4 + 0.49

Reorder the terms:
0.49 + -1.4x + x2 = -1.4 + 0.49

Combine like terms: -1.4 + 0.49 = -0.91
0.49 + -1.4x + x2 = -0.91

Factor a perfect square on the left side:
(x + -0.7)(x + -0.7) = -0.91

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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