5x^2+3=7x

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Solution for 5x^2+3=7x equation:


Simplifying
5x2 + 3 = 7x

Reorder the terms:
3 + 5x2 = 7x

Solving
3 + 5x2 = 7x

Solving for variable 'x'.

Reorder the terms:
3 + -7x + 5x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
3 + -7x + 5x2 = 0

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

Divide each side by '5'.
0.6 + -1.4x + x2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + -1.4x + -0.6 + x2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + -1.4x + x2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + -1.4x + x2 = 0 + -0.6
-1.4x + x2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
-1.4x + x2 = -0.6

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 = -0.6 + 0.49

Reorder the terms:
0.49 + -1.4x + x2 = -0.6 + 0.49

Combine like terms: -0.6 + 0.49 = -0.11
0.49 + -1.4x + x2 = -0.11

Factor a perfect square on the left side:
(x + -0.7)(x + -0.7) = -0.11

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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