4x^2=9x+100

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Solution for 4x^2=9x+100 equation:


Simplifying
4x2 = 9x + 100

Reorder the terms:
4x2 = 100 + 9x

Solving
4x2 = 100 + 9x

Solving for variable 'x'.

Reorder the terms:
-100 + -9x + 4x2 = 100 + 9x + -100 + -9x

Reorder the terms:
-100 + -9x + 4x2 = 100 + -100 + 9x + -9x

Combine like terms: 100 + -100 = 0
-100 + -9x + 4x2 = 0 + 9x + -9x
-100 + -9x + 4x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
-100 + -9x + 4x2 = 0

Factor a trinomial.
(-4 + -1x)(25 + -4x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(25 + -4x)' equal to zero and attempt to solve: Simplifying 25 + -4x = 0 Solving 25 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + -4x = 0 + -25 Combine like terms: 25 + -25 = 0 0 + -4x = 0 + -25 -4x = 0 + -25 Combine like terms: 0 + -25 = -25 -4x = -25 Divide each side by '-4'. x = 6.25 Simplifying x = 6.25

Solution

x = {-4, 6.25}

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