anonymous
  • anonymous
a^2+b^2=25,and a^3+b^3=91.find a and b
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
see ur solution is following
anonymous
  • anonymous
do u know what is the formula of a^3 + b^3
anonymous
  • anonymous
do u mean (a+b)(a+b)(a+b)=(a^2=2ab+b^2)(a+b)

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anonymous
  • anonymous
no
anonymous
  • anonymous
then i am lost
anonymous
  • anonymous
THE VALUE OF a^3 + b^3 = (a+b)(a^2 - ab + b^2)
anonymous
  • anonymous
a^2 + b^2 = 25
anonymous
  • anonymous
(a+b)(25-ab)
anonymous
  • anonymous
91 = (a+b)(25-ab)
anonymous
  • anonymous
are u understanding
anonymous
  • anonymous
yap following
anonymous
  • anonymous
u must know that 3^2 + 4^2
anonymous
  • anonymous
= 25
anonymous
  • anonymous
put the value of a and b respectively to 3 and 4 in the equation a^3 + b^3 = 91
anonymous
  • anonymous
u will get 27 + 64 that is 91 so a = 3 and b=4
anonymous
  • anonymous
did u understand
anonymous
  • anonymous
if yes than give me medal for this solution thanx
anonymous
  • anonymous
yap.tq sir
anonymous
  • anonymous
give me medal
anonymous
  • anonymous
hey do u knw me if no than how u said me sir
anonymous
  • anonymous
i use to it by calling my teacher "sir".how to give you medal
anonymous
  • anonymous
click on the icon GIVE MEDAL on the right side of the message i m giving u and also need not say me sir i m in 8th grade and u???????????
anonymous
  • anonymous
bye

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