x(4x+3)=280

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Solution for x(4x+3)=280 equation:


Simplifying
x(4x + 3) = 280

Reorder the terms:
x(3 + 4x) = 280
(3 * x + 4x * x) = 280
(3x + 4x2) = 280

Solving
3x + 4x2 = 280

Solving for variable 'x'.

Reorder the terms:
-280 + 3x + 4x2 = 280 + -280

Combine like terms: 280 + -280 = 0
-280 + 3x + 4x2 = 0

Factor a trinomial.
(-35 + -4x)(8 + -1x) = 0

Subproblem 1

Set the factor '(-35 + -4x)' equal to zero and attempt to solve: Simplifying -35 + -4x = 0 Solving -35 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '35' to each side of the equation. -35 + 35 + -4x = 0 + 35 Combine like terms: -35 + 35 = 0 0 + -4x = 0 + 35 -4x = 0 + 35 Combine like terms: 0 + 35 = 35 -4x = 35 Divide each side by '-4'. x = -8.75 Simplifying x = -8.75

Subproblem 2

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

Solution

x = {-8.75, 8}

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