sqrt(x-27) + sqrt(x) = 9

solve for x...

i tried squaring both sides to get the sqrts to go away but i still couldnt get the right answer.

I need to know how to get to the final solution. FYI the answer is 36.

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- Sep 11th 2008, 10:21 AMjohntuanAlgebraic Manipulations and Equations
sqrt(x-27) + sqrt(x) = 9

solve for x...

i tried squaring both sides to get the sqrts to go away but i still couldnt get the right answer.

I need to know how to get to the final solution. FYI the answer is 36. - Sep 11th 2008, 10:29 AMMoo
- Sep 11th 2008, 11:04 AMMoo
Another way of doing it :

Let and

We have

Now, multiply both sides by :

So you have :

Check if it is correct :

Yay ! - Sep 11th 2008, 11:42 AMshinhidora
- Sep 11th 2008, 11:48 AMMoo
- Sep 11th 2008, 11:50 AMmasters
- Sep 11th 2008, 11:53 AMshinhidora