8x^2-21x=-10

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Solution for 8x^2-21x=-10 equation:


Simplifying
8x2 + -21x = -10

Reorder the terms:
-21x + 8x2 = -10

Solving
-21x + 8x2 = -10

Solving for variable 'x'.

Reorder the terms:
10 + -21x + 8x2 = -10 + 10

Combine like terms: -10 + 10 = 0
10 + -21x + 8x2 = 0

Factor a trinomial.
(5 + -8x)(2 + -1x) = 0

Subproblem 1

Set the factor '(5 + -8x)' equal to zero and attempt to solve: Simplifying 5 + -8x = 0 Solving 5 + -8x = 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 + -8x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -8x = 0 + -5 -8x = 0 + -5 Combine like terms: 0 + -5 = -5 -8x = -5 Divide each side by '-8'. x = 0.625 Simplifying x = 0.625

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {0.625, 2}

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