9x^2+6x+1=81

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Solution for 9x^2+6x+1=81 equation:


Simplifying
9x2 + 6x + 1 = 81

Reorder the terms:
1 + 6x + 9x2 = 81

Solving
1 + 6x + 9x2 = 81

Solving for variable 'x'.

Reorder the terms:
1 + -81 + 6x + 9x2 = 81 + -81

Combine like terms: 1 + -81 = -80
-80 + 6x + 9x2 = 81 + -81

Combine like terms: 81 + -81 = 0
-80 + 6x + 9x2 = 0

Factor a trinomial.
(-10 + -3x)(8 + -3x) = 0

Subproblem 1

Set the factor '(-10 + -3x)' equal to zero and attempt to solve: Simplifying -10 + -3x = 0 Solving -10 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -3x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -3x = 0 + 10 -3x = 0 + 10 Combine like terms: 0 + 10 = 10 -3x = 10 Divide each side by '-3'. x = -3.333333333 Simplifying x = -3.333333333

Subproblem 2

Set the factor '(8 + -3x)' equal to zero and attempt to solve: Simplifying 8 + -3x = 0 Solving 8 + -3x = 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 + -3x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -3x = 0 + -8 -3x = 0 + -8 Combine like terms: 0 + -8 = -8 -3x = -8 Divide each side by '-3'. x = 2.666666667 Simplifying x = 2.666666667

Solution

x = {-3.333333333, 2.666666667}

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