## keeponbleeding How do I add sqrt(3x+7) to sqrt(3x-7)? one year ago one year ago

1. surdawi

$\sqrt{3x+7}+\sqrt{3x+7}$ x + x =?

2. surdawi

@keeponbleeding you there

3. keeponbleeding

The second one is 3x-7 not +7 but x+x =2x...

4. surdawi

$\sqrt{3x+7}+\sqrt{3x-7}$ you cant add them unless you have a value for x

5. keeponbleeding

well actually the question was a function: f(x)=sqrt(3x+7) g(x)= sqrt(3x-7)? Find (f + g)(x). So I thought Id add them…

6. surdawi

correct just put the "+" between them and you are good to go

7. keeponbleeding

ohhh. k, its that easy...thanks! :)