I need help with few probs very fast plz help!!
1)
2)
3)
4)
5)
6)
Originally Posted by mathelp
Hello,
to Nr. 5:
$\displaystyle -4 \sqrt{27}+2\sqrt{12}=$
$\displaystyle -4 \sqrt{9 \cdot 3}+2\sqrt{4 \cdot 3}=$
$\displaystyle -4 \cdot 3 \sqrt{ 3}+2 \cdot 2 \sqrt{ 3}=$
$\displaystyle -12 \sqrt{3}+4 \sqrt{3}= -8 \cdot \sqrt{3}$
to 6.:
$\displaystyle \left( \frac{5c^{-3} d^4}{p^{-2}} \right)^{-1}\ \cdot \ \left( \frac{p^7 d^{-1}}{c^2} \right)^2 =$
$\displaystyle 5^{-1} \cdot c^3 \cdot d^{-4} \cdot p^{-2} \cdot p^{14} \cdot d^{-2} \cdot c^{-2} = $
$\displaystyle \frac{cp^{12}}{5d^6}$
Greetings
EB