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galben [10]
3 years ago
12

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

Mathematics
2 answers:
trapecia [35]3 years ago
8 0
A=2, b=3
if you have an algebra like 2a, it means a×2

a2+ab-b2+5
=2×2+2×3-3×2+5
=4+6-6+5
=4+5
=9

answer=9
adelina 88 [10]3 years ago
6 0
So 22+23-32+5 ( 22+23=45 ) 45+32=77+5=82 So The Answer Is 82 . 
Just Add . 
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