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nirvana33 [79]
3 years ago
10

2+3=8, 3+7=27, 4+5=32, 5+8=60, 6+7=72, 7+8=??

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
5 0

Answer:

98

2+3=2*[3+(2-1)]=8

3+7=3*[7+(3-1)]=27

4+5=4*[5+(4-1)]=32

5+8=5*[8+(5-1)]=60

6+7=6*[7+(6-1)]=72

therefore

7+8=7*[8+(7-1)]=98

x+y=x[y+(x-1)]=x^2+xy-x

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