Question

Plzzzz.. guys pls solve this!​

Answer 1

Answer:

Just do determination with the 1st row

Answer 2

Answer:

-7/3

Step-by-step explanation:

x-1 + x-1 + x-1 + x+2 + x+2 + x+2 + x+6 + x+6 + x+6  = 0

3(x- 1 + x+2 + x+6 ) = 0

x-1+x+2+x+6 =0

3x +7 = 0

3x = -7

x = -7/3