Question

(243)²=(3)x+5 helpus

Answer 1

answer is 5
because 243=3power5
243square =3power10
now compare both sides
x+5=10
x=5

Answer 2

first

square of 243---59049


then 5 is transfer to l .h.s

then 59044. and then 3. is goes in divide then 19 681.333. is its answer