Ответ:
Объяснение:
8/x²/(7-1/x²) - 8/x²/(7+1/x²)= 8/x²(7x²-1)/x² - 8/x²(7x²+1)/x²= 8/(7x²-1) - 8/(7x²+1)= (56x²+8-56x²+8)/(49x⁴-1)= 16/(49x⁴-1)
x=0,25⁻¹
x=4
16/(49*256-1)= 16/12543
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Verified answer
Ответ:
Объяснение:
8/x²/(7-1/x²) - 8/x²/(7+1/x²)= 8/x²(7x²-1)/x² - 8/x²(7x²+1)/x²= 8/(7x²-1) - 8/(7x²+1)= (56x²+8-56x²+8)/(49x⁴-1)= 16/(49x⁴-1)
x=0,25⁻¹
x=4
16/(49*256-1)= 16/12543