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23-04-2014
Mathematics

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evaluate a2+ab-b2+5 when a=2 and b=3

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23-04-2014

[tex]a^2+ab-b^2+5\\\\substitue\ a=2\ and\ b=3:\\\\2^2+2\cdot3-3^2+5=4+6-9+5=6[/tex]

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23-04-2014

Just plug in your valuables a=2 and b=3
Answer: 6

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