-x^2+7x-10=10

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Solution for -x^2+7x-10=10 equation:


Simplifying
-1x2 + 7x + -10 = 10

Reorder the terms:
-10 + 7x + -1x2 = 10

Solving
-10 + 7x + -1x2 = 10

Solving for variable 'x'.

Reorder the terms:
-10 + -10 + 7x + -1x2 = 10 + -10

Combine like terms: -10 + -10 = -20
-20 + 7x + -1x2 = 10 + -10

Combine like terms: 10 + -10 = 0
-20 + 7x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
20 + -7x + x2 = 0

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + -7x + -20 + x2 = 0 + -20

Reorder the terms:
20 + -20 + -7x + x2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -7x + x2 = 0 + -20
-7x + x2 = 0 + -20

Combine like terms: 0 + -20 = -20
-7x + x2 = -20

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = -20 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -20 + 12.25

Combine like terms: -20 + 12.25 = -7.75
12.25 + -7x + x2 = -7.75

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = -7.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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