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Mathematics 9 Online
OpenStudy (lakers):

Find the solution to x2 = 121. A. ±121 B. -11 C. ±11 D. 11

OpenStudy (anonymous):

sqrt 121 and you get what?

OpenStudy (anonymous):

or try plugging in -11 and 11 into the equation

OpenStudy (lakers):

11 so +-11 or just 11?

OpenStudy (anonymous):

did you try putting in -11?

OpenStudy (lakers):

i dont get it?

OpenStudy (anonymous):

anytime you square a number it becomes positive because a positive*positive= positive and a negative* a negative= a positive

OpenStudy (lakers):

ok thank you

OpenStudy (anonymous):

(-11)(-11)=?

OpenStudy (anonymous):

got it?

OpenStudy (lakers):

yup

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