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# Smit

• Smit commented,

I'm sorry, I don't know what "zero-based index ordering" is. I've started just adding a rote "1" to the equation, but I still don't understand how it gets there. I hate doing things by rote, but I ...

• Smit commented,

Where does the 1 in (a+1) come from? I'm sorry, I just don't understand.

• Smit commented,

I think so, yes. Thanks for your help.

• Smit commented,

Evan, Thanks for your help. I'm sorry I'm so slow at this. It's still not clear to me where the 1 is coming from. Shouldn't (1/7)^x-(1/7)^x equal 0? You're subtracting something from itself. Also, ...

• Smit created a post,

### Where the heck does the 1 come from?

In this explanation, I cannot figure out where the 1 came from. It just suddenly appears! Can anyone explain?

• Smit commented,

Miss A, I appreciate your help. I'm having real trouble generalizing this  to other problems, however.  Again, thank you for your help.

• Smit created a post,

Where does the "1" come from? I'm also unclear how the "factoring out" works.

• Smit created a post,

### Solving Quadratic equations using structure

As I do the exercises, I have yet to correctly solve a single one. The hints mention something about substituting p, but I have no clue what to do next. For example p^2-5p=0 Can anyone give me a cl...

• Smit commented,

Thanks. Your answer is very clear, even to this math-challenged person. But how does one set up the equation to find something other than the rate? For example, the  volume of the pool is or how ma...

• Smit created a post,

I haven't the slightest idea how to set up an equation to solve this problem (or any problems in the exercise, for that matter.) Are there some general principles I'm just not getting?

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