9x^2-21x+20=10

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Solution for 9x^2-21x+20=10 equation:


Simplifying
9x2 + -21x + 20 = 10

Reorder the terms:
20 + -21x + 9x2 = 10

Solving
20 + -21x + 9x2 = 10

Solving for variable 'x'.

Reorder the terms:
20 + -10 + -21x + 9x2 = 10 + -10

Combine like terms: 20 + -10 = 10
10 + -21x + 9x2 = 10 + -10

Combine like terms: 10 + -10 = 0
10 + -21x + 9x2 = 0

Factor a trinomial.
(2 + -3x)(5 + -3x) = 0

Subproblem 1

Set the factor '(2 + -3x)' equal to zero and attempt to solve: Simplifying 2 + -3x = 0 Solving 2 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -3x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -3x = 0 + -2 -3x = 0 + -2 Combine like terms: 0 + -2 = -2 -3x = -2 Divide each side by '-3'. x = 0.6666666667 Simplifying x = 0.6666666667

Subproblem 2

Set the factor '(5 + -3x)' equal to zero and attempt to solve: Simplifying 5 + -3x = 0 Solving 5 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3x = 0 + -5 -3x = 0 + -5 Combine like terms: 0 + -5 = -5 -3x = -5 Divide each side by '-3'. x = 1.666666667 Simplifying x = 1.666666667

Solution

x = {0.6666666667, 1.666666667}

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