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-3 4
b) 2 0 2x3 - 1x0 = 6 - 0 = 6
1 3
c) 4 5 4x(-1) - 0x5 = -4 -0 = -4
0 -1
d) -2 1 (-2)x(-2) - (-3)x1= 4-(-3) = 7
-3 -2
e) 2 1 2x2 - 1x1 = 4 -1 = 3
1 2