on.vlp 2 years ago Help me please !!!!! I have f(x) = 6x - x^2 - 6sqrt(a+b) determine: (f(sqrt(a+b) - f(1)) / sqrt(a+b) = ? Thank you for your help

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1. myininaya

$f(\sqrt{a+b})=6\sqrt{a+b}-(\sqrt{a+b})^2-6\sqrt{a+b}$

2. myininaya

simplify this

3. on.vlp

$f(x)=6x-x ^{2}-6\sqrt{a+b}$

4. on.vlp

but i need to find: $\frac{ f(\sqrt{a+b})-f(1) }{ \sqrt{a+b}}=?$

5. myininaya

Yes I'm asking you to find that one thing first.

6. myininaya

Just simplify what I wrote above and we are going to plug that into your expression that you are trying to evaluate

7. myininaya

|dw:1387347305923:dw| This is our main goal to evaluate But right now I'm having you work on the little parts of it first like this circled thing:

8. myininaya

|dw:1387347352551:dw|

9. myininaya

then we will find this other circled thing: |dw:1387347373389:dw|

10. on.vlp

it's clear thank you very much myininaya