Question

If a = 3 , b = 1, C = -2 then find the
value of:
ab + bc + ca- abc

Answer 1

a = 3

b = 1

c = (-2)

then,

ab + bc + ca - abc

= [3x1] + [1x(-2)] + [(-2)x3] - (3x1x[-2])

= 3 + (-2) + (-6) - (-6)

= 3 - 2 - 6 + 6

= 9 - 8

1

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