2 x 2 ) 3 4x 1 )= 0 check July 8, 2019 16 32 64 128 2 x 2 )+ 3 4x 1 )= 0 check 2 x 2 )+ 3 4x 1 )= 0 solve and check 2*2 is 4 2 - 2 = 0
