Question

The system of linear equation x + y + z = 2, 2x + 3y + 2z = 5, 2x + 3y + (a² - 1)z = (a + 1) then (A) is inconsistent when a = 4 (B) has a unique solution for |a| = √3
(C) has infinitely many solutions for a = 4 (D) inconsistent when |a| = √3
[JEE Main 2019]

Answer 1

Answer:

Step-by-step explanation:

The answer for this question is:

HCF = 1

LCM = 1680

Answer 2

Step-by-step explanation:

for infinite Delta=0

as well as Delta 1,2 and 3

for inconsistent delta =0

and atleast one of Delta 1,2 and 3