10X^2+2X-8=

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Solution for 10X^2+2X-8= equation:


Simplifying
10X2 + 2X + -8 = 0

Reorder the terms:
-8 + 2X + 10X2 = 0

Solving
-8 + 2X + 10X2 = 0

Solving for variable 'X'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-4 + X + 5X2) = 0

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

Ignore the factor 2.

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -5X)' equal to zero and attempt to solve: Simplifying 4 + -5X = 0 Solving 4 + -5X = 0 Move all terms containing X to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -5X = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -5X = 0 + -4 -5X = 0 + -4 Combine like terms: 0 + -4 = -4 -5X = -4 Divide each side by '-5'. X = 0.8 Simplifying X = 0.8

Solution

X = {-1, 0.8}

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