Question

Tính giá trị biểu thức : (-43).(1-305)-305.43

Answer 1

=43*(304-305)

=43*(-1)

=-43

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Answer 2

(-43)*(1-305)-305*43

=43*304-305*43

=43*(304-305)

=43*(-1)

=-43

Answer 3

[-43]*[1-305]-305*43

=[-43]*[-304]-305*43

=43*304-305*43

=43*[304-305]

=43*[-1]

=-43