7x^2-6x+40=0

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Solution for 7x^2-6x+40=0 equation:


Simplifying
7x2 + -6x + 40 = 0

Reorder the terms:
40 + -6x + 7x2 = 0

Solving
40 + -6x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
5.714285714 + -0.8571428571x + x2 = 0

Move the constant term to the right:

Add '-5.714285714' to each side of the equation.
5.714285714 + -0.8571428571x + -5.714285714 + x2 = 0 + -5.714285714

Reorder the terms:
5.714285714 + -5.714285714 + -0.8571428571x + x2 = 0 + -5.714285714

Combine like terms: 5.714285714 + -5.714285714 = 0.000000000
0.000000000 + -0.8571428571x + x2 = 0 + -5.714285714
-0.8571428571x + x2 = 0 + -5.714285714

Combine like terms: 0 + -5.714285714 = -5.714285714
-0.8571428571x + x2 = -5.714285714

The x term is -0.8571428571x.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571x + 0.1836734694 + x2 = -5.714285714 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571x + x2 = -5.714285714 + 0.1836734694

Combine like terms: -5.714285714 + 0.1836734694 = -5.5306122446
0.1836734694 + -0.8571428571x + x2 = -5.5306122446

Factor a perfect square on the left side:
(x + -0.4285714286)(x + -0.4285714286) = -5.5306122446

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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