Question

How to find the solution set of √(x+4)+√(9-x)=5

Answer 1

Start by squaring everything

Answer 2

how was it? :))

Answer 3

What do you mean? Square EVERYTHING:

So do:
\[(\sqrt{x+4})^2 + (\sqrt{9-x})^2 = 5^2\]

Answer 4

Then just solve for x.

Answer 5

thanks
:)

Answer 6

No problem. mind marking best response?

Answer 7

How will I solve this "A 30% of barium chloride is mixed with 10 liters of water to form 20% solution. How many Liters of original solution did we start with?"