Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

- Index
- » Introductions
- »
**Help!**

Pages: **1**

**diamond777****Member**- Registered: 2011-07-19
- Posts: 20

seventy years young student of maths is fun

In need of lots of help!

lets start with:

algebra - working with exponents and logarithms-

question five

solve (for x)

2log3(x)=5

answer D x = 9square root(3)

i presume the 2 means that x is squared in the question?

please explain what 9square root of (3) is and how it is the square root of 243?

thank you ....

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,467

Hi diamond777;

seventy years young student of maths is fun

In need of lots of help!

Divide both sides by 2

3^x both sides.

Welcome to the forum, young man.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,972

Hi diamond777,

**Welcome to the forum!**

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

Pages: **1**

- Index
- » Introductions
- »
**Help!**