5x^2+16=-42x

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Solution for 5x^2+16=-42x equation:


Simplifying
5x2 + 16 = -42x

Reorder the terms:
16 + 5x2 = -42x

Solving
16 + 5x2 = -42x

Solving for variable 'x'.

Reorder the terms:
16 + 42x + 5x2 = -42x + 42x

Combine like terms: -42x + 42x = 0
16 + 42x + 5x2 = 0

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

Subproblem 1

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

Subproblem 2

Set the factor '(2 + 5x)' equal to zero and attempt to solve: Simplifying 2 + 5x = 0 Solving 2 + 5x = 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 + 5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 5x = 0 + -2 5x = 0 + -2 Combine like terms: 0 + -2 = -2 5x = -2 Divide each side by '5'. x = -0.4 Simplifying x = -0.4

Solution

x = {-8, -0.4}

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