SOLUTION: sqrt x+3=81 1)What is the value of x+3? 2)What is the value of x? 3)What is the value of 3*sqrt x+3?

Question 252613: sqrt x+3=81 1)What is the value of x+3?
2)What is the value of x?
3)What is the value of 3*sqrt x+3?
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
Let's take it one part at a time. YOu were given the following equation:

---
1)What is the value of x+3?
We square both sides to get
x + 3 = 81^2
or
x + 3 = 6561
---
2)What is the value of x?
subtract 3 from both sides to get
x = 6558
---
3)What is the value of 3*sqrt x+3?
we already know, sqrt(x+3) = 81, so,
3*sqrt(x+3) = 3*81 = 243.
RELATED QUESTIONS
If x greater than 1 and sqrt(x)/x^3 = x^m, what is the value of m? (answered by tommyt3rd)

If x = sqrt 3 + sqrt 2 over sqrt 3 - sqrt 2 and y=1, then the value of x-y over x-3y is (answered by Edwin McCravy)

If x = 7 plus 4 sqrt 3 , then the value of sqrt x plus 1 divided by sqrt x is... (answered by mananth)

x-2/3+x-3/4=x-1/2 What is the value of x (answered by Fombitz)

Find the approximate value of x:... (answered by jim_thompson5910)

What is the approximate value of {{{ 3^sqrt(999)... (answered by Edwin McCravy)

what is the value of... (answered by rahman)

for what values of x is the expression below defined? sqrt x+3/sqrt... (answered by josgarithmetic)

Please Help Me With This: Show That Sqrt{{(9+x^2)}}= 3 + x^2/6 - x^4/216. For What Value... (answered by ankor@dixie-net.com,robertb)