Question

Дам 55 балов решите пожалуйста

Answer 1

$1. x^5x^{12} =x^{5+12}=x^{17}\ 2. y^4y^{11}=y^{4+11}=y^{15}\ 3. z^{20}z^6=z^{20+6}=z^{26}\ 4. 40^{20}cdot40^3=40^{20+3}=40^{23}\ 5. (0.3)^7 cdot (0.3)^{29}=(0.3)^{7+29}=(0.3)^{36}\ 6. (8.4)^3 cdot (8.4)^{15}=(8.4)^{3+15}=(8.4)^{18}\ 7. ( frac{2}{7} )^{31}cdot( frac{2}{7} )^6=( frac{2}{7} )^{31+6}=( frac{2}{7} )^{37}\ 8. ( frac{15}{19} )^3 cdot ( frac{15}{19} )^{19}= ( frac{15}{19} )^{3+19}= ( frac{15}{19} )^{22}$
$9. (4 frac{4}{9} )^{14} cdot (4 frac{4}{9} )^{28}=(4 frac{4}{9} )^ {14+28}=(4 frac{4}{9} )^ {42}\ 10. (-5)^4 cdot (-5)^{11} = (-5)^{4+11}=(-5)^{15}\ 11. (- frac{1}{3} )^4 cdot (- frac{1}{3} )^8 = (- frac{1}{3} )^{4+8}=(- frac{1}{3} )^{12}\ 12. (-6.2)^6 cdot (-6.2)^7=(-6.2)^{6+7}=(-6.2)^{13}\ 13. (-c)^{10} cdot (-c)^{51}=(-c)^{10+51}=(-c)^{61}\ 14. (- frac{d}{2} )^9 cdot (- frac{d}{2} )^9 = (- frac{d}{2} )^{9+9}=(- frac{d}{2} )^{18}$
$15. (-1.4k)^5 cdot (-1.4k)^{20}=(-1.4k)^{5+20}=(-1.4k)^{25}$