4x^2=8x+5

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Solution for 4x^2=8x+5 equation:


Simplifying
4x2 = 8x + 5

Reorder the terms:
4x2 = 5 + 8x

Solving
4x2 = 5 + 8x

Solving for variable 'x'.

Reorder the terms:
-5 + -8x + 4x2 = 5 + 8x + -5 + -8x

Reorder the terms:
-5 + -8x + 4x2 = 5 + -5 + 8x + -8x

Combine like terms: 5 + -5 = 0
-5 + -8x + 4x2 = 0 + 8x + -8x
-5 + -8x + 4x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
-5 + -8x + 4x2 = 0

Factor a trinomial.
(-1 + -2x)(5 + -2x) = 0

Subproblem 1

Set the factor '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 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 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5

Subproblem 2

Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Solution

x = {-0.5, 2.5}

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