Answer:
1/x + x = 5
simply square both sides:
(1/x + x)^2 = 5^2
1/x^2 + 2(1/x)(x) + x^2 = 25
1/x^2 + 2 + x^2 = 25
1/x^2 + x^2 = 23
Step-by-step explanation:
1. 10 in / 3 ft
2. 5 min / 1 h
3. 1 kg / 250 g
option 3
