( begin array l A= left[ begin array cc 1 & -2 3 & 6 end array right], B= left[ begin array ll 3 & 7 2 & 1 end array right], C= left[ begin array ll 0 & 1 2 & 8 end array right] M= left[ begin array ll x+2 y+3 z quad 2 x+y+4 z quad 3 x+2 y+z end array right] এবং N= left[ begin array lll -1 & 2 & 3 end array right] end array )