3y^2+15y=-72

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Solution for 3y^2+15y=-72 equation:


Simplifying
3y2 + 15y = -72

Reorder the terms:
15y + 3y2 = -72

Solving
15y + 3y2 = -72

Solving for variable 'y'.

Reorder the terms:
72 + 15y + 3y2 = -72 + 72

Combine like terms: -72 + 72 = 0
72 + 15y + 3y2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(24 + 5y + y2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(24 + 5y + y2)' equal to zero and attempt to solve: Simplifying 24 + 5y + y2 = 0 Solving 24 + 5y + y2 = 0 Begin completing the square. Move the constant term to the right: Add '-24' to each side of the equation. 24 + 5y + -24 + y2 = 0 + -24 Reorder the terms: 24 + -24 + 5y + y2 = 0 + -24 Combine like terms: 24 + -24 = 0 0 + 5y + y2 = 0 + -24 5y + y2 = 0 + -24 Combine like terms: 0 + -24 = -24 5y + y2 = -24 The y term is 5y. Take half its coefficient (2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. 5y + 6.25 + y2 = -24 + 6.25 Reorder the terms: 6.25 + 5y + y2 = -24 + 6.25 Combine like terms: -24 + 6.25 = -17.75 6.25 + 5y + y2 = -17.75 Factor a perfect square on the left side: (y + 2.5)(y + 2.5) = -17.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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