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

You are not logged in.

- Topics: Active | Unanswered

**4littlepiggiesmom****Member**- Registered: 2006-01-09
- Posts: 42

34. (sqrt)3{5(sqrt)s +(sqrt)3} I come up with 8(sqrt)6 am I on the right track or do I need to buy a whole new train??

38 {(sqrt)c +d}{3+(sqrt)5} I get 8(sqrt)6+3d+d(sqrt)5????

Last one 14/{60 -(sqrt)578} no idea where to start even??

Any and all help would be great but I'd rather get started in the right directions over just getting the answers...thank again! A

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 23,797

34.Is the question √3{5√3+√3}?

If so, the answer is √3{6√3}or 6 x 3, i.e. 18.

If the questions is

√3{5√s+√3}, the answer is 5√(3s)+3.

38. {√c+d}{60-√578}

If this is the question, the answer would be

60√c-√(578c)+60d-d√578.

This cannot be simplified further.

Remember, √a+√a=2√a,

√a x √a = √a²=a

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