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Question

Solve the following equation :
x+y=z,3x2y+17z=0,x3+3y3+2x3=167.

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Solution

x+yz=0......(i)3x2y+17z=0......(ii)x3+3y3+2z3=167....(iii)

Applying cross multiplication on (i) and (ii)

x172=y17+3=z23x3=y4=z1=kx=3k,y=4k,z=k

Substituting x,y and z in (iii)

(3k)3+3(4k)3+2(k)3=167167k3=167k=1x=3,y=4,z=1


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