решите пожалуста:
[tex] {5}^{ - 8} \times {5}^{6} [/tex]
[tex] {8}^{ - 7} \times {8}^{ - 9} [/tex]
[tex] {25}^{ - 4} \div {5}^{ - 8} [/tex]
[tex] {5}^{ - 8} \times {5}^{6} [/tex]
[tex] {8}^{ - 7} \times {8}^{ - 9} [/tex]
[tex] {25}^{ - 4} \div {5}^{ - 8} [/tex]
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Ответ:
Объяснение:
5⁻⁸*5⁶=5⁽⁻⁸⁺⁶⁾=5⁻².
8⁻⁷*8⁻⁹=8⁽⁻⁷⁻⁹⁾=8⁻¹⁶.
25⁻⁴:5⁻⁸=5⁽⁻⁴*²⁾:5⁻⁸=5⁻⁸:5⁻⁸=1.
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Ответ:
5^(-8)*5^6= 5^(-8+6)= 5^(-2) = 1/25 = 0.04
8^(-7)*8(-9) = 8^(-7+(-9)) = 8^(-16)
25^(-4)÷5^(-8) = 5^((2)*(-4) -(-8)) = 5^(-8+8) = 5^0 = 1