Answered

which of the following correctly completes the square for the equation below x2+2x=19


A: (x+1)^2=23

B:(x+2)^2=20

C:(x+1)^2=20

D:(x+2)^2=23

Verified Answer :

answer is C:(x+1)^2=20

x2 + 2x = 19
x2 + 2x + 1 = 19 + 1
(x + 1)^2 = 20

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