Melody

36 from 2,3,6,8?

36=3*12

so

36=3*(8+6-2)

there is another answer :)

Welcome back TR  :))

Thanks for that correct answer :))

$$\\3\div 2\frac{ 5}{8}\\\\
=3\div \frac{2*8+ 5}{8}\\\\
=3\div \frac{21}{8}\\\\
=3\times \frac{8}{21}\\\\
=1\times \frac{8}{7}\\\\
=\frac{8}{7}\\\\
=1\frac{1}{7}\\\\$$

Because I am not as clever as you   

$$\\log_9x^2=9\\\\
2log_9x=9\\\\
log_9x=9/2\\\\
9^{log_9x}=9^{9/2}\\\\
x=9^{9/2}\\\\
x=3^9\\\\
x=19683$$

check:

$${{log}}_{{\mathtt{9}}}{\left({{\mathtt{19\,683}}}^{{\mathtt{2}}}\right)} = {\mathtt{9}}$$

@@ End of Day Wrap  Thurs 6/8/15     Sydney, Australia Time   9:40pm    ♪ ♫

Hi all,

Today our fabulous answers were delivered by Heureka, CPhill, MaiaMitchel, Rubenhh and RoyalTitanium.  Thank you    

I DON'T KNOW       

$$\\(2x^4)(-5x^9)
=-10x^{13}$$

So the answers are Always or sometimes to describe the statement.

1.)  (an irrational number) + (an irrational number) = an irrational number      Always

2.)  (a rational number) x (a rational number) = a rational number                  Always

3.)  (an irrational number) x (an irrational number) = an irrational number       Sometimes

Don't ask me to prove it though :)

You are welcome Sabi.  

You answer was almost perfect.

You just have to be careful about those pesky holes :)