4x^2+64x=320

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Solution for 4x^2+64x=320 equation:


Simplifying
4x2 + 64x = 320

Reorder the terms:
64x + 4x2 = 320

Solving
64x + 4x2 = 320

Solving for variable 'x'.

Reorder the terms:
-320 + 64x + 4x2 = 320 + -320

Combine like terms: 320 + -320 = 0
-320 + 64x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-80 + 16x + x2) = 0

Factor a trinomial.
4((-20 + -1x)(4 + -1x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-20 + -1x)' equal to zero and attempt to solve: Simplifying -20 + -1x = 0 Solving -20 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + -1x = 0 + 20 Combine like terms: -20 + 20 = 0 0 + -1x = 0 + 20 -1x = 0 + 20 Combine like terms: 0 + 20 = 20 -1x = 20 Divide each side by '-1'. x = -20 Simplifying x = -20

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-20, 4}

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