Ask your own question, for FREE!
Mathematics 17 Online
OpenStudy (anonymous):

all square roots of 81. I know the positive is 9 but what is the negative square root?

OpenStudy (rulnick):

-9

OpenStudy (rulnick):

x is a square root of y if x^2 = y so 9 and -9 are square roots of 81.

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!