66-x*x-x=10

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Solution for 66-x*x-x=10 equation:


Simplifying
66 + -1x * x + -1x = 10

Multiply x * x
66 + -1x2 + -1x = 10

Reorder the terms:
66 + -1x + -1x2 = 10

Solving
66 + -1x + -1x2 = 10

Solving for variable 'x'.

Reorder the terms:
66 + -10 + -1x + -1x2 = 10 + -10

Combine like terms: 66 + -10 = 56
56 + -1x + -1x2 = 10 + -10

Combine like terms: 10 + -10 = 0
56 + -1x + -1x2 = 0

Factor a trinomial.
(7 + -1x)(8 + x) = 0

Subproblem 1

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Subproblem 2

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 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 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Solution

x = {7, -8}

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