Can anybody be my friend ? i am going through some stuff and it is my fault but i don't want to talk about

Can someone answer this question for me

(x-5)1/2+5=2 what is possible solution of this equation

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of