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anonymous

  • 5 years ago

a^2+b^2=25,and a^3+b^3=91.find a and b

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  1. anonymous
    • 5 years ago
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    see ur solution is following

  2. anonymous
    • 5 years ago
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    do u know what is the formula of a^3 + b^3

  3. anonymous
    • 5 years ago
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    do u mean (a+b)(a+b)(a+b)=(a^2=2ab+b^2)(a+b)

  4. anonymous
    • 5 years ago
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    no

  5. anonymous
    • 5 years ago
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    then i am lost

  6. anonymous
    • 5 years ago
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    THE VALUE OF a^3 + b^3 = (a+b)(a^2 - ab + b^2)

  7. anonymous
    • 5 years ago
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    a^2 + b^2 = 25

  8. anonymous
    • 5 years ago
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    (a+b)(25-ab)

  9. anonymous
    • 5 years ago
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    91 = (a+b)(25-ab)

  10. anonymous
    • 5 years ago
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    are u understanding

  11. anonymous
    • 5 years ago
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    yap following

  12. anonymous
    • 5 years ago
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    u must know that 3^2 + 4^2

  13. anonymous
    • 5 years ago
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    = 25

  14. anonymous
    • 5 years ago
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    put the value of a and b respectively to 3 and 4 in the equation a^3 + b^3 = 91

  15. anonymous
    • 5 years ago
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    u will get 27 + 64 that is 91 so a = 3 and b=4

  16. anonymous
    • 5 years ago
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    did u understand

  17. anonymous
    • 5 years ago
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    if yes than give me medal for this solution thanx

  18. anonymous
    • 5 years ago
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    yap.tq sir

  19. anonymous
    • 5 years ago
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    give me medal

  20. anonymous
    • 5 years ago
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    hey do u knw me if no than how u said me sir

  21. anonymous
    • 5 years ago
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    i use to it by calling my teacher "sir".how to give you medal

  22. anonymous
    • 5 years ago
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    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???????????

  23. anonymous
    • 5 years ago
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    bye

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spraguer (Moderator)
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