4x^2=15x+25

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Solution for 4x^2=15x+25 equation:


Simplifying
4x2 = 15x + 25

Reorder the terms:
4x2 = 25 + 15x

Solving
4x2 = 25 + 15x

Solving for variable 'x'.

Reorder the terms:
-25 + -15x + 4x2 = 25 + 15x + -25 + -15x

Reorder the terms:
-25 + -15x + 4x2 = 25 + -25 + 15x + -15x

Combine like terms: 25 + -25 = 0
-25 + -15x + 4x2 = 0 + 15x + -15x
-25 + -15x + 4x2 = 15x + -15x

Combine like terms: 15x + -15x = 0
-25 + -15x + 4x2 = 0

Factor a trinomial.
(-5 + -4x)(5 + -1x) = 0

Subproblem 1

Set the factor '(-5 + -4x)' equal to zero and attempt to solve: Simplifying -5 + -4x = 0 Solving -5 + -4x = 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 + -4x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -4x = 0 + 5 -4x = 0 + 5 Combine like terms: 0 + 5 = 5 -4x = 5 Divide each side by '-4'. x = -1.25 Simplifying x = -1.25

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-1.25, 5}

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