Răspuns:
7.
a)
[tex]= \frac{13x^{2} }{y}[/tex]
b)
[tex]=-\frac{3ab^{5} }{17} *\frac{17}{9a^{2} b^{3} }=-\frac{b^{2} }{3a}[/tex]
c)
[tex]=-\sqrt{3} tz[/tex]
d)
[tex]=\frac{23a^{3} b^{2} }{9} *\frac{9}{5a^{4}b } =\frac{23b}{5a} =4,6*\frac{b}{a}[/tex]
8.
a)
= 9x²y⁴
b)
= 25a⁸b⁴
c)
[tex]=(-\frac{11tz}{5} )^{-3} =(-\frac{5}{11tz} )^{3} =-\frac{125}{1331t^{3} z^{3}}[/tex]
d)
[tex]=\frac{1}{2a^{6} b^{4} }[/tex]
Explicație pas cu pas:
