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OpenStudy (anonymous):
Evaluate x² - 7xy for x = 7 and y = 3. A. - 138 B. - 98 C. - 133 D. 196
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OpenStudy (texaschic101):
well...lets start subbing x^2 - 7xy (x = 7 and y = 3) 7^2 - 7(7)(3) 49 - 49(3) 49 - 147 - 98
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