Объяснение:
2)
40-1/4^2+1/4=40 - 1/16 + 1/4 = (640-1+4)/16 = 643/16
3)
7^2 * 1/7^3 = 1/7
4)
5^-4 * 125 = 5^-4 * 5^3 = 5^(-4+3)=5^-1=1/5
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Объяснение:
2)
40-1/4^2+1/4=40 - 1/16 + 1/4 = (640-1+4)/16 = 643/16
3)
7^2 * 1/7^3 = 1/7
4)
5^-4 * 125 = 5^-4 * 5^3 = 5^(-4+3)=5^-1=1/5