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Numeric expressions are mathematical expressions calculated according to their rules... and according to the rules, in this exercise we get -216.
- As stated above, we will do according to the rules, which are: Elimination rule, and operation.
Elimination rule: parentheses, square brackets, braces. Operation: Potentiation and roots. Division multiplication. Addition and subtraction.
- In our case, we will do the multiplication of (-3) x (-6 ), then 18 x (+ 4 ), and finally 72 x (- 3)... we have to remember the sign game, which is extreme importance!
(+) × (+) = ( + ) = Positive with positive results in positive.
(-) × (-) = +) = Negative with negative results in positive.
(+) × (-) = (-) = Positive with negative results in negative.
(-) × (+) = (-) = Negative with positive results in negative.
Going to your exercise... (- 3) × (-6) results in + 18, because negative with negative results in positive! So, we multiply 18 by 4, which results in 72, and finally, 72 x (-3), because it is negative, we will get - 216.
Complete Calculation;
[tex]( - 3) \times ( - 6) \times ( + 4) \times ( - 3) \\ 18 \times ( + 4) \times (- 3) \\ 72 \times ( - 3) \\ - 216[/tex]
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