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Mathematics 15 Online
OpenStudy (anonymous):

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OpenStudy (sleepyhead314):

(-20)^2 = +400 because negative times negative it positive

OpenStudy (sleepyhead314):

and why did you do "- - 1"?

OpenStudy (sleepyhead314):

the other concepts of it is correct @ZachPrince :)

OpenStudy (anonymous):

I was up late doing this so I made a couple mistakes but thanks for pointing them out for me! :)

OpenStudy (sleepyhead314):

glad I could help :)

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