MathematicsMedium244×since 2002Q4639If 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 :A−2-2−2B2C3D−3-3−3Check answerSkip