7x^2-14x+15=0

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Solution for 7x^2-14x+15=0 equation:


Simplifying
7x2 + -14x + 15 = 0

Reorder the terms:
15 + -14x + 7x2 = 0

Solving
15 + -14x + 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'.
2.142857143 + -2x + x2 = 0

Move the constant term to the right:

Add '-2.142857143' to each side of the equation.
2.142857143 + -2x + -2.142857143 + x2 = 0 + -2.142857143

Reorder the terms:
2.142857143 + -2.142857143 + -2x + x2 = 0 + -2.142857143

Combine like terms: 2.142857143 + -2.142857143 = 0.000000000
0.000000000 + -2x + x2 = 0 + -2.142857143
-2x + x2 = 0 + -2.142857143

Combine like terms: 0 + -2.142857143 = -2.142857143
-2x + x2 = -2.142857143

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -2.142857143 + 1

Reorder the terms:
1 + -2x + x2 = -2.142857143 + 1

Combine like terms: -2.142857143 + 1 = -1.142857143
1 + -2x + x2 = -1.142857143

Factor a perfect square on the left side:
(x + -1)(x + -1) = -1.142857143

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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