7x^2-42=-43x

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Solution for 7x^2-42=-43x equation:


Simplifying
7x2 + -42 = -43x

Reorder the terms:
-42 + 7x2 = -43x

Solving
-42 + 7x2 = -43x

Solving for variable 'x'.

Reorder the terms:
-42 + 43x + 7x2 = -43x + 43x

Combine like terms: -43x + 43x = 0
-42 + 43x + 7x2 = 0

Factor a trinomial.
(-7 + -1x)(6 + -7x) = 0

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 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 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(6 + -7x)' equal to zero and attempt to solve: Simplifying 6 + -7x = 0 Solving 6 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -7x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -7x = 0 + -6 -7x = 0 + -6 Combine like terms: 0 + -6 = -6 -7x = -6 Divide each side by '-7'. x = 0.8571428571 Simplifying x = 0.8571428571

Solution

x = {-7, 0.8571428571}

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