y^3+7y^2-8Y-56=

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Solution for y^3+7y^2-8Y-56= equation:


Simplifying
y3 + 7y2 + -8Y + -56 = 0

Reorder the terms:
-56 + -8Y + 7y2 + y3 = 0

Solving
-56 + -8Y + 7y2 + y3 = 0

Solving for variable 'Y'.

Move all terms containing Y to the left, all other terms to the right.

Add '56' to each side of the equation.
-56 + -8Y + 7y2 + 56 + y3 = 0 + 56

Reorder the terms:
-56 + 56 + -8Y + 7y2 + y3 = 0 + 56

Combine like terms: -56 + 56 = 0
0 + -8Y + 7y2 + y3 = 0 + 56
-8Y + 7y2 + y3 = 0 + 56

Combine like terms: 0 + 56 = 56
-8Y + 7y2 + y3 = 56

Add '-7y2' to each side of the equation.
-8Y + 7y2 + -7y2 + y3 = 56 + -7y2

Combine like terms: 7y2 + -7y2 = 0
-8Y + 0 + y3 = 56 + -7y2
-8Y + y3 = 56 + -7y2

Add '-1y3' to each side of the equation.
-8Y + y3 + -1y3 = 56 + -7y2 + -1y3

Combine like terms: y3 + -1y3 = 0
-8Y + 0 = 56 + -7y2 + -1y3
-8Y = 56 + -7y2 + -1y3

Divide each side by '-8'.
Y = -7 + 0.875y2 + 0.125y3

Simplifying
Y = -7 + 0.875y2 + 0.125y3

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