(x+1)(x+8)=8x

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Solution for (x+1)(x+8)=8x equation:


Simplifying
(x + 1)(x + 8) = 8x

Reorder the terms:
(1 + x)(x + 8) = 8x

Reorder the terms:
(1 + x)(8 + x) = 8x

Multiply (1 + x) * (8 + x)
(1(8 + x) + x(8 + x)) = 8x
((8 * 1 + x * 1) + x(8 + x)) = 8x
((8 + 1x) + x(8 + x)) = 8x
(8 + 1x + (8 * x + x * x)) = 8x
(8 + 1x + (8x + x2)) = 8x

Combine like terms: 1x + 8x = 9x
(8 + 9x + x2) = 8x

Solving
8 + 9x + x2 = 8x

Solving for variable 'x'.

Reorder the terms:
8 + 9x + -8x + x2 = 8x + -8x

Combine like terms: 9x + -8x = 1x
8 + 1x + x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
8 + 1x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + 1x + -8 + x2 = 0 + -8

Reorder the terms:
8 + -8 + 1x + x2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 1x + x2 = 0 + -8
1x + x2 = 0 + -8

Combine like terms: 0 + -8 = -8
1x + x2 = -8

The x term is 1x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = -8 + 0.25

Reorder the terms:
0.25 + x + x2 = -8 + 0.25

Combine like terms: -8 + 0.25 = -7.75
0.25 + x + x2 = -7.75

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -7.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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