Ask your own question, for FREE!
Mathematics 21 Online
OpenStudy (anonymous):

What number must you add to complete the square? x2 + 2x = -1

OpenStudy (amistre64):

x+n x+n ---- xx+nx nx+nn --------- x^2+2x+n^2 2nx = 2x so n=1

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!