4y^2+16y=9

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Solution for 4y^2+16y=9 equation:


Simplifying
4y2 + 16y = 9

Reorder the terms:
16y + 4y2 = 9

Solving
16y + 4y2 = 9

Solving for variable 'y'.

Reorder the terms:
-9 + 16y + 4y2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + 16y + 4y2 = 0

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

Subproblem 1

Set the factor '(-9 + -2y)' equal to zero and attempt to solve: Simplifying -9 + -2y = 0 Solving -9 + -2y = 0 Move all terms containing y to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -2y = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2y = 0 + 9 -2y = 0 + 9 Combine like terms: 0 + 9 = 9 -2y = 9 Divide each side by '-2'. y = -4.5 Simplifying y = -4.5

Subproblem 2

Set the factor '(1 + -2y)' equal to zero and attempt to solve: Simplifying 1 + -2y = 0 Solving 1 + -2y = 0 Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2y = 0 + -1 -2y = 0 + -1 Combine like terms: 0 + -1 = -1 -2y = -1 Divide each side by '-2'. y = 0.5 Simplifying y = 0.5

Solution

y = {-4.5, 0.5}

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