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20-10-2021
Mathematics

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Given a²+b²=49 and a+b=9, then ab=?

Respuesta :

inspirationalgdandyt inspirationalgdandyt

20-10-2021

Answer:

16

Step-by-step explanation:

Given,

a²+b²=49

a+b=9

Now,

a²+b²=49

(a+b)^2-2ab=49

9^2-2ab=49

81-49=2ab

32/2=ab

ab=16

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