X^2-8X+9=X+1

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Solution for X^2-8X+9=X+1 equation:


Simplifying
X2 + -8X + 9 = X + 1

Reorder the terms:
9 + -8X + X2 = X + 1

Reorder the terms:
9 + -8X + X2 = 1 + X

Solving
9 + -8X + X2 = 1 + X

Solving for variable 'X'.

Reorder the terms:
9 + -1 + -8X + -1X + X2 = 1 + X + -1 + -1X

Combine like terms: 9 + -1 = 8
8 + -8X + -1X + X2 = 1 + X + -1 + -1X

Combine like terms: -8X + -1X = -9X
8 + -9X + X2 = 1 + X + -1 + -1X

Reorder the terms:
8 + -9X + X2 = 1 + -1 + X + -1X

Combine like terms: 1 + -1 = 0
8 + -9X + X2 = 0 + X + -1X
8 + -9X + X2 = X + -1X

Combine like terms: X + -1X = 0
8 + -9X + X2 = 0

Factor a trinomial.
(1 + -1X)(8 + -1X) = 0

Subproblem 1

Set the factor '(1 + -1X)' equal to zero and attempt to solve: Simplifying 1 + -1X = 0 Solving 1 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1X = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1X = 0 + -1 -1X = 0 + -1 Combine like terms: 0 + -1 = -1 -1X = -1 Divide each side by '-1'. X = 1 Simplifying X = 1

Subproblem 2

Set the factor '(8 + -1X)' equal to zero and attempt to solve: Simplifying 8 + -1X = 0 Solving 8 + -1X = 0 Move all terms containing X to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1X = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1X = 0 + -8 -1X = 0 + -8 Combine like terms: 0 + -8 = -8 -1X = -8 Divide each side by '-1'. X = 8 Simplifying X = 8

Solution

X = {1, 8}

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