[JEE Advanced 1979] the equations x 2y 2z 1 and 2x 4y 4z 9 have
The equations $x+2y+2z=1$ and $2x+4y+4z=9$ have
(a) only one solution
(b) only two solutions
(c) infinitely many solutions
(d) none of these
1 Answer
VAVidaara Admin
✓ Vidaara Team
✓ Accepted
· 2d ago
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Correct answer: (d) none of these
The second equation is twice the left side of the first but $2\ne9$, so the system is inconsistent — no solution.
JEE Advanced 1979 · Quadratic Equations and Inequations — verified solution by the Vidaara Team.
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