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OpenStudy (anonymous):
evaluate x^2-3y+x when x=9 and y=7
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OpenStudy (bibby):
Plug in the given values in to the variables and evaluate. Can you solve?\[9^2-3(7)+9=?\]
OpenStudy (anonymous):
Yup is it 81-21+9
OpenStudy (bibby):
exactly. And you can evaluate it however you feel comfortable. For example 81+9-21 = 90 -21 (81-21)+9=60+9
OpenStudy (anonymous):
Oh ok thanks
OpenStudy (anonymous):
-4(x+6)+5=6(x+2)+5
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