21y^2+26y+8=0

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Solution for 21y^2+26y+8=0 equation:


Simplifying
21y2 + 26y + 8 = 0

Reorder the terms:
8 + 26y + 21y2 = 0

Solving
8 + 26y + 21y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(2 + 3y)(4 + 7y) = 0

Subproblem 1

Set the factor '(2 + 3y)' equal to zero and attempt to solve: Simplifying 2 + 3y = 0 Solving 2 + 3y = 0 Move all terms containing y to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3y = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3y = 0 + -2 3y = 0 + -2 Combine like terms: 0 + -2 = -2 3y = -2 Divide each side by '3'. y = -0.6666666667 Simplifying y = -0.6666666667

Subproblem 2

Set the factor '(4 + 7y)' equal to zero and attempt to solve: Simplifying 4 + 7y = 0 Solving 4 + 7y = 0 Move all terms containing y to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 7y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 7y = 0 + -4 7y = 0 + -4 Combine like terms: 0 + -4 = -4 7y = -4 Divide each side by '7'. y = -0.5714285714 Simplifying y = -0.5714285714

Solution

y = {-0.6666666667, -0.5714285714}

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