Math, asked by karthik40, 1 year ago

please solve the give sums

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Answers

Answered by Lokeshsai
1
3-   a+b=7
    (a+b)
²=7²
    a²+b²+2(ab)=49
  
  a²+b²+2(12)=49  
     
a²+b²=49-24=25

4--   a-b=5
       (a-b)²=25
       a²+b²=25+2(ab)
      a²+b²=25+24=49


is this enough 
find the mistake 
this is such a dead easy prob man
 

karthik40: sooty its my miatake i just used the wrong formulae
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