y=x^4-9x^2+20

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Solution for y=x^4-9x^2+20 equation: 


Simplifying
y = x4 + -9x2 + 20

Reorder the terms:
y = 20 + -9x2 + x4

Solving
y = 20 + -9x2 + x4

Solving for variable 'y'.

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

Simplifying
y = 20 + -9x2 + x4

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