21x^2-17x+8=6

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Solution for 21x^2-17x+8=6 equation:


Simplifying
21x2 + -17x + 8 = 6

Reorder the terms:
8 + -17x + 21x2 = 6

Solving
8 + -17x + 21x2 = 6

Solving for variable 'x'.

Reorder the terms:
8 + -6 + -17x + 21x2 = 6 + -6

Combine like terms: 8 + -6 = 2
2 + -17x + 21x2 = 6 + -6

Combine like terms: 6 + -6 = 0
2 + -17x + 21x2 = 0

Factor a trinomial.
(1 + -7x)(2 + -3x) = 0

Subproblem 1

Set the factor '(1 + -7x)' equal to zero and attempt to solve: Simplifying 1 + -7x = 0 Solving 1 + -7x = 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 + -7x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -7x = 0 + -1 -7x = 0 + -1 Combine like terms: 0 + -1 = -1 -7x = -1 Divide each side by '-7'. x = 0.1428571429 Simplifying x = 0.1428571429

Subproblem 2

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

Solution

x = {0.1428571429, 0.6666666667}

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