Expertz plz help me with Q 3 am having my mock test @12 pm - Maths - Matrices

Question

Expertz plz help me with Q 3 am having my mock test @12 pm quick
plz explain each step too

Rupesh Kumar · Accepted Answer

Dear student,
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5e894efd21beb%20jpg">Regards

Expertz plz help me with Q 3....am having my mock test @12 pm ...quick plz...explain each step too