(x+1)^2+10(x+1)+21=0

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Solution for (x+1)^2+10(x+1)+21=0 equation: 



(x+1)^2+10(x+1)+21=0

We multiply parentheses

(x+1)^2+10x+10+21=0

We add all the numbers together, and all the variables

10x+(x+1)^2+31=0

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

10x+(x+1)^2=-31

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