3x^2-8=-4x^2-55x

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Solution for 3x^2-8=-4x^2-55x equation:


Simplifying
3x2 + -8 = -4x2 + -55x

Reorder the terms:
-8 + 3x2 = -4x2 + -55x

Reorder the terms:
-8 + 3x2 = -55x + -4x2

Solving
-8 + 3x2 = -55x + -4x2

Solving for variable 'x'.

Reorder the terms:
-8 + 55x + 3x2 + 4x2 = -55x + -4x2 + 55x + 4x2

Combine like terms: 3x2 + 4x2 = 7x2
-8 + 55x + 7x2 = -55x + -4x2 + 55x + 4x2

Reorder the terms:
-8 + 55x + 7x2 = -55x + 55x + -4x2 + 4x2

Combine like terms: -55x + 55x = 0
-8 + 55x + 7x2 = 0 + -4x2 + 4x2
-8 + 55x + 7x2 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
-8 + 55x + 7x2 = 0

Factor a trinomial.
(-8 + -1x)(1 + -7x) = 0

Subproblem 1

Set the factor '(-8 + -1x)' equal to zero and attempt to solve: Simplifying -8 + -1x = 0 Solving -8 + -1x = 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 + -1x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -1x = 0 + 8 -1x = 0 + 8 Combine like terms: 0 + 8 = 8 -1x = 8 Divide each side by '-1'. x = -8 Simplifying x = -8

Subproblem 2

Set the factor '(1 + -7x)' equal to zero and attempt to solve: Simplifying 1 + -7x = 0 Solving 1 + -7x = 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 + -7x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -7x = 0 + -1 -7x = 0 + -1 Combine like terms: 0 + -1 = -1 -7x = -1 Divide each side by '-7'. x = 0.1428571429 Simplifying x = 0.1428571429

Solution

x = {-8, 0.1428571429}

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