(9x^2)-(16x)-4=0

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Solution for (9x^2)-(16x)-4=0 equation:


Simplifying
(9x2) + -1(16x) + -4 = 0

Remove parenthesis around (16x)
(9x2) + -1 * 16x + -4 = 0

Multiply -1 * 16
(9x2) + -16x + -4 = 0

Reorder the terms:
-4 + -16x + (9x2) = 0

Solving
-4 + -16x + (9x2) = 0

Solving for variable 'x'.

Factor a trinomial.
(-2 + -9x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-2 + -9x)' equal to zero and attempt to solve: Simplifying -2 + -9x = 0 Solving -2 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -9x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -9x = 0 + 2 -9x = 0 + 2 Combine like terms: 0 + 2 = 2 -9x = 2 Divide each side by '-9'. x = -0.2222222222 Simplifying x = -0.2222222222

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-0.2222222222, 2}

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