SOLUTION: Please Please help. sqrt y-25=5 y=? 9 3/2 write without exponents 3 sqrt -125 3 sqrt 375

Algebra ->  Square-cubic-other-roots -> SOLUTION: Please Please help. sqrt y-25=5 y=? 9 3/2 write without exponents 3 sqrt -125 3 sqrt 375      Log On


   

Question 228592: Please Please help.
sqrt y-25=5 y=?
9 3/2 write without exponents
3 sqrt -125
3 sqrt 375
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
# 1
sqrt%28y-5%29=5 Start with the given equation


y-5=5%5E2 Square both sides.


y-5=25 Square 5 to get 25


y=30 Add 5 to both sides.


----------------------------------
# 2
9%5E%283%2F2%29%5E%22%22=%289%5E%281%2F2%29%29%5E3=%28sqrt%289%29%29%5E3=3%5E3=27

So 9%5E%283%2F2%29%5E%22%22=27

----------------------------------
# 3




So 3%2Asqrt%28-125%29=-15i%2Asqrt%285%29

----------------------------------
# 4




So 3%2Asqrt%28375%29=15%2Asqrt%2815%29