Question

Answer quickly I need this answer

Answer 1

C1 tends to abc*C1=>abc/a=bc

l bc bc a³ l

l ca ca b³ l

l ab ab c³ l

C1 tends to C1-C2

l 0 bc a³ l

l 0 ca b³ l

l 0 ab c³ l

expand det

0(ac⁴-ab⁴)-bc(0-0)+a³(0-0)=0

or in the determinant any rows or columns become zero det value becomes 0