8x^2+21=-59x

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Solution for 8x^2+21=-59x equation:


Simplifying
8x2 + 21 = -59x

Reorder the terms:
21 + 8x2 = -59x

Solving
21 + 8x2 = -59x

Solving for variable 'x'.

Reorder the terms:
21 + 59x + 8x2 = -59x + 59x

Combine like terms: -59x + 59x = 0
21 + 59x + 8x2 = 0

Factor a trinomial.
(7 + x)(3 + 8x) = 0

Subproblem 1

Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(3 + 8x)' equal to zero and attempt to solve: Simplifying 3 + 8x = 0 Solving 3 + 8x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 8x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 8x = 0 + -3 8x = 0 + -3 Combine like terms: 0 + -3 = -3 8x = -3 Divide each side by '8'. x = -0.375 Simplifying x = -0.375

Solution

x = {-7, -0.375}

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