complete the square (x²+22x=0)

complete the square
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1 Answer

x2+22x=0=x(x+22). (x=0 or -22).

Completing the square:

x2+22x+121=121,

(x+11)2=121,

x+11=±11, x=-11±11, so x=11-11=0 or -11-11=-22, as before.

by Top Rated User (1.2m points)

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