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DerKrebs [107]
3 years ago
8

The expression [(-7) ³ - (-7³)] - [(-7) ² + 7²] results in

Mathematics
2 answers:
scZoUnD [109]3 years ago
5 0
BASIC \: \: ALGEBRA \\ \\ \\ Given \: \: expression \: - \\ ( {( - 7)}^{3} - ( { - 7)}^{3} ) - ( {( - 7)}^{2} + {(7)}^{2} ) \\ \\ = \: \: 0 \: - \: ( {( - 7)}^{2} + {(7)}^{2} ) \\ \\ = \: \: 0 \: - (49 + 49) \\ \\ = \: \: 0 - 98 \\ \\ \\ = \: \: - 98 \: \: \: \: \: \: \: \: \: \: Ans.
Reil [10]3 years ago
4 0
[(-7)(-7)(-7) + (-7)(-7)(-7)] - [(-7)(-7) + (7)(7)] 
(-343 + -343) - (49 + 49)
-686 - 98 = -784
The answer is a) -784 :)
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