Даю 61 балл. только второй вариант

1)[latex]c^9*c^2= c^{9+2} =c ^{11} .[/latex] 2)[latex] b^{8} :b^4=b^4.[/latex] 3)[latex](a^5)^3= a^{15} .[/latex] 4)[latex](xy)^n=x^ny^n.[/latex] 5)[latex]( \frac{b}{c} )^3= \frac{b^3}{c^3} .[/latex] 6)[latex]...=x^3*x^{12} =x^{15} .[/latex] 7)[latex]...=a^6:a^7=a^ ^{-1} .[/latex] 8)[latex]...=9a^6 b^{10} .[/latex] 9)[latex]...= \frac{3y^3}{5x^3} .[/latex] 10)[latex]4!=1*2*3*4=24.[/latex] 11)[latex]...= \frac{c ^{2k+5} }{c^{2k} } =c^5.[/latex] 12)[latex]10 ^{2(n-1)} =10^4 \\ 2n-2=4 \\ 2n=6 \\ n=3.[/latex] 13)[latex]5^8*11^8\ \textless \ 11^8*11^8[/latex]

[latex]1)c ^{9} *c ^{2} =c ^{9-2} =c ^{7} \\ 2)b ^{8} :b ^{4} =b ^{8-4} =b ^{4} \\3) (a ^{5} ) ^{3} =a ^{5*3} =a ^{15} \\ 4)(xy) ^{n} = x^{n} y^{n} [/latex] [latex]5)( \frac{b}{c} ) ^{3} = \frac{b ^{3} }{c^{3} } [/latex] [latex]6) x^{3} * (x^{4} ) ^{3} = x^{3} * x^{12} = x^{15} \\ 7) \frac{a*a ^{5} }{a ^{7} } = \frac{1}{a} \\ 8)(-3a ^{3} b ^{5} ) ^{2} =9a ^{6} b ^{10} \\ [/latex] [latex]9) \frac{9 x^{3} y^{4} }{15 x^{6} y} = \frac{3 y^{3} }{5 x^{3} } [/latex] [latex]10)1*2*3*4=2*12=24 \\ 11) \frac{c ^{k+5}*c ^{k} }{(c ^{2}) ^{k} } =c ^{k+5+k-2k} =c ^{5} \\[/latex] [latex]12)10 ^{2(n-1)} =10000 \\10 ^{2(n-1)} =10 ^{4} \\ 2n-2=4 \\ 2n=4+2 \\ 2n=6 \\ n=3[/latex] [latex]13)55 ^{8} ?11 ^{16} \\ 11 ^{8} *5 ^{8} ? 11^{8} *11 ^{8} \\ 11 ^{8} *5 ^{8} \ \textless \ 11^{8} *11 ^{8} [/latex]