singer1 singer1

10-11-2015
Mathematics

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Evaluate a² + ab -b² +5 when a =2 and b = 3. is the answer A. 0 B. 1 C. 6 D. 11

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bellbell252 bellbell252

10-11-2015

(2)^2 + (2*3) - (3)^2 + 5=?

4+6-9+5=6

The answer is C. 6

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