Question

if x = 3+2√2, find 1) x-1/x

this is the question of 9 th standard plz answer correctly
it's to argent​

Answer 1

Answer:

What is (a) the highest, (b) the lowest total resistance that can be secured by

combinations of four coils of resistance 4 Ω, 8 Ω, 12 Ω, 24 Ω? What is (a) the highest, (b) the lowest total resistance that can be secured by

combinations of four coils of resistance 4 Ω, 8 Ω, 12 Ω, 24 Ω?