y=-x^3-21x+20

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Solution for y=-x^3-21x+20 equation: 


Simplifying
y = -1x3 + -21x + 20

Reorder the terms:
y = 20 + -21x + -1x3

Solving
y = 20 + -21x + -1x3

Solving for variable 'y'.

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

Simplifying
y = 20 + -21x + -1x3

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