1. what is the solution of the matrix equation ?
[9 4] x= [-9 -6]
[2 1] [-1 -8]
a. [5 -26]
[9 -60]
b. [-5 26]
[-1 -8]
c. [-5 26]
[9 -60]
d. [9 26]
[9 1]
solve the system
{ 2x +y - 4z = -30
{ 3x + 2y +2z =-8
{5x + 5y + z = -26
a. (-30,-8,-26)
b.(4,-2,4)
c. (-4,-2,4)
,2,-4)

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