Math, asked by jay273, 1 year ago

a+b=27, ab=182 value of a and b


jay273: kaise sir please bataiye
adityakjha24: here how i can..
adityakjha24: a+ b = 27 , (b = 27-a)
adityakjha24: put b = 27-a in ab =182 and solve
adityakjha24: u will getbthe answer
jay273: thanks sir
adityakjha24: welcome buddy
adityakjha24: dont say sir ..
jay273: ok
adityakjha24: :)

Answers

Answered by steeve
8
Given :-

a + b  = 27...................(i)

and


ab = 182.......................(ii)


From (ii) we get

b =  \frac{182}{a}

Putting value of b in (i), we get

a +  \frac{182}{a}  = 27 \\   \\  =  > a {}^{2}  - 27a + 182 = 0 \\  \\  =  > a {}^{2}  - 14a - 13a + 182 = 0 \\  \\  =  > a(a - 14) - 13(a - 14) \\  \\  =  > a = 13 \: or \: 14

a = 13 or 14

b = 14 or 13

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steeve: if possible
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Answered by Anonymous
4
hey dear



here is your answer


Given

ab =182


a+b = 27



Now we use identity

( a + b) ^2 = (27)^2


a^2 + b^2 +2ab = 729



a^2 + b^2 = 729 -2ab


a^2 + b^2 = 729 - 2* 182


a^2 + b^2 = 729 -364


a^2 + b^2 = 365


a^2 + b^2 -2ab = 365 -2ab

(a^2 - b^2) = 365 * -2 * 182


a^2 -b^2 = 365 -364


a^2 - b^2 =1


a -b = āˆš1


a-b = +, - 1. ( 2nd equation)


a + b = 27. ( first equation)



Now solving the first and second equation we get



if we take a - b = 1




a+b = 27

a - b =1


a + b +a -b = 27 +1

2a =28

a = 14

as we similarly take a -b = -1


hence b value = 14 -1 =13



hence your answer is a =14 , b = 13



hope it helps


thank you












jay273: thanks
Anonymous: welcome
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