y=x*-10x+21

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Solution for y=x*-10x+21 equation: 


Simplifying
y = x * -10x + 21

Reorder the terms for easier multiplication:
y = -10x * x + 21

Multiply x * x
y = -10x2 + 21

Reorder the terms:
y = 21 + -10x2

Solving
y = 21 + -10x2

Solving for variable 'y'.

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

Simplifying
y = 21 + -10x2

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