y=-.4x^2+8.1x+5.8

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Solution for y=-.4x^2+8.1x+5.8 equation: 


Simplifying
y = -0.4x2 + 8.1x + 5.8

Reorder the terms:
y = 5.8 + 8.1x + -0.4x2

Solving
y = 5.8 + 8.1x + -0.4x2

Solving for variable 'y'.

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

Simplifying
y = 5.8 + 8.1x + -0.4x2

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