looileannlooi
looileannlooi looileannlooi
  • 20-10-2021
  • Mathematics
contestada

Given a²+b²=49 and a+b=9, then ab=?​

Respuesta :

inspirationalgdandyt
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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