x^2+25-8x+40=0

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Solution for x^2+25-8x+40=0 equation:


Simplifying
x2 + 25 + -8x + 40 = 0

Reorder the terms:
25 + 40 + -8x + x2 = 0

Combine like terms: 25 + 40 = 65
65 + -8x + x2 = 0

Solving
65 + -8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-65' to each side of the equation.
65 + -8x + -65 + x2 = 0 + -65

Reorder the terms:
65 + -65 + -8x + x2 = 0 + -65

Combine like terms: 65 + -65 = 0
0 + -8x + x2 = 0 + -65
-8x + x2 = 0 + -65

Combine like terms: 0 + -65 = -65
-8x + x2 = -65

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = -65 + 16

Reorder the terms:
16 + -8x + x2 = -65 + 16

Combine like terms: -65 + 16 = -49
16 + -8x + x2 = -49

Factor a perfect square on the left side:
(x + -4)(x + -4) = -49

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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