x(x+2)+100-x2=0

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Solution for x(x+2)+100-x2=0 equation: 



x(x+2)+100-x2=0

We add all the numbers together, and all the variables

-1x^2+x(x+2)+100=0

We multiply parentheses

-1x^2+x^2+2x+100=0

We add all the numbers together, and all the variables

2x+100=0

We move all terms containing x to the left, all other terms to the right

2x=-100

x=-100/2

x=-50

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