=∛(9^2-17)=∛64=4.................................................
<span>1) 2^3-х=1/32
2^3-x=1/2^5
2^3-x=2^-5
3-x=-5
x=8
2)(1/9)^х=1/81
(1/9)^x=1/9^2
x=2
3)25^-х=1/5
(5^2)^-x=5^-1
5^-2x=5^-1
-2x=-1
x=-1/-2
x=0.5
</span>
(a-2)(a+2)(a^2-2a+4)(a^2+2a+4)=a^6-64
(a-2)(a^2+2a+4)*(a+2)(a^2-2a+4)=a^6-64
(a^3-8)(a^3+80)=a^6-64