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OpenStudy (icalibear):
What is the value of z so that -9and 9 are both solutions of x^2 + z = 103?
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OpenStudy (anonymous):
Z=22. Plug in -9 and 9 in for x and subtract what you get from 103, you should get 22.
OpenStudy (anonymous):
The square of a negative number = a positive. So: 9^2=(-9)^2 103-81=22 z=22
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