anonymous
  • anonymous
Multiply (−4)(−2)(−5). −40 −8 8 40
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
multiply those 4 numbers?
pooja195
  • pooja195
Multiply all the numbers without the signs first 4 x 2 x 5=?
anonymous
  • anonymous
40?

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anonymous
  • anonymous
it is a fact that only binary operations can be performed
pooja195
  • pooja195
yep and since there is an odd number of negatives the answer must be negative
anonymous
  • anonymous
so -40
pooja195
  • pooja195
Yep
anonymous
  • anonymous
it does not matter which order you perform these operations, you will still come up with the same answer e.g (-4)(-2) = 8(-5) = -40 or (-2)(-5)=10(-4) = -40
anonymous
  • anonymous
which pooja195 knows is the prinicple of commutativity

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