dyn3
dyn3
17-08-2017
Mathematics
contestada
What is #3 step by step?
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Аноним
Аноним
17-08-2017
When there is a minus before a parenthesis, you must change the sign of the number(s) inside the parenthesis.
(-9) - (-7) × [2 - (-9)]^2 + (-7)
-9 + 7 × [2 + 9]^2 - 7
- 9 + 7 * (11)^2 - 7
-9 + 7*121 - 7
-9 + 847 - 7
831
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