8x^2+2x=210

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Solution for 8x^2+2x=210 equation:


Simplifying
8x2 + 2x = 210

Reorder the terms:
2x + 8x2 = 210

Solving
2x + 8x2 = 210

Solving for variable 'x'.

Reorder the terms:
-210 + 2x + 8x2 = 210 + -210

Combine like terms: 210 + -210 = 0
-210 + 2x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-105 + x + 4x2) = 0

Factor a trinomial.
2((-21 + -4x)(5 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-21 + -4x)' equal to zero and attempt to solve: Simplifying -21 + -4x = 0 Solving -21 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + -4x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + -4x = 0 + 21 -4x = 0 + 21 Combine like terms: 0 + 21 = 21 -4x = 21 Divide each side by '-4'. x = -5.25 Simplifying x = -5.25

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-5.25, 5}

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