№973. Вычислите: 1) (-8)²+(9)²-(-4)³; 2) (-13)²-(-14)²
№974. 1) (-1)⁶-(-1)⁸-(-1)⁴; 2) (-1)²+(-1)⁵+(-1)₄.
№974. 1) (-1)⁶-(-1)⁸-(-1)⁴; 2) (-1)²+(-1)⁵+(-1)₄.
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Ответ:
№973
1. (-8)²+(9)²-(-4)³
64+81-(-64)
64+81+64
209
2. (-13)²-(-14)²
169-196
-27
№974
1. (-1)⁶-(-1)⁸-(-1)⁴
1-1-1
-1
2. (-1)²+(-1)⁵+(-1)⁴
1-1+1
1