An algebra problem by Varun Agrawal

Algebra Level 1

a+b+c = 9

a^2 + b^2 +c^2 = 29

a^3 + b^3 +c^3 = 99

Determine a, b, c. Prove your answer, because the answer is very obvious.

4,-6,9 3,-2,1 2,3,4 -1,-2,-3

Varun Agrawal by Varun Agrawal , 21, India

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3 solutions

Lorelie Galvez
Mar 25, 2014

substituting the choices given to the problem

2+3+4=9

4+9+16=29

8+27+64+99

2 Helpful 0 Interesting 0 Brilliant 0 Confused

actually, there was no need to give options

Anuj Shikarkhane - 6 years, 11 months ago
Hassam Rind
Apr 5, 2014

a + b + c = 9 2 + 3 + 4 = 9 a2 + b2 + c2 = 29 (2)2 + (3)2 + (4)2 = 29 a3 + b3 + c3 = 99 (2)3 + (3)3 + (4)3 = 99

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Nujum Yusuf
Mar 30, 2014

use trial and error method , from the first given condition

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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