JEE Main 20248 Apr, Evening shiftMathematicsMediumMatrices and Determinants245× since 2002If the system of equations x+4y−z=λ,7x+9y+μz=−3,5x+y+2z=−1x+4 y-z=\lambda, 7 x+9 y+\mu z=-3,5 x+y+2 z=-1x+4y−z=λ,7x+9y+μz=−3,5x+y+2z=−1 has infinitely many solutions, then (2μ+3λ)(2 \mu+3 \lambda)(2μ+3λ) is equal to :AOption A. −2-2−2BOption B. 2COption C. 3DOption D. −3-3−3CheckSkip · show solution
