![b,c\text{ and d}](https://img.qammunity.org/2023/formulas/mathematics/college/hnxjram9n91gc7ioruqhlcat3xqznjq3bk.png)
Step-by-step explanation
remember some properties of the exponents
![\begin{gathered} a^m\cdot a^n=a^(m+n) \\ (a^m)^n=a^(m\cdot n) \\ a^(-m)=(1)/(a^m) \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/d8p8gfowe46gxitjdzf932tlf8f2fcjozc.png)
then, to solve this solve each option and compare
Step 1
![6^(-5)\cdot6^2](https://img.qammunity.org/2023/formulas/mathematics/college/9g2hmnicxniix9bn9k72l0lrez99s17zca.png)
solve
![\begin{gathered} 6^(-5)\cdot6^2=6^(-5+2)=6^(-3) \\ \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/33v5to0bir2j2m3j7stwgw4nzzu0xuphl1.png)
so, this is not an answer
Step 2
![((1)/(6^2))^5](https://img.qammunity.org/2023/formulas/mathematics/college/d6vl3zy80rhmvv2ojqcwcccqlvq8z7unsr.png)
solve
![\begin{gathered} ((1)/(6^2))^5=(6^(-2))^5=6^((-2\cdot5))=6^(-10) \\ \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/6on6mnty6xjrvch4j6g9qe3zjuq2eid8cm.png)
so, this is an answer
Step 3
![\begin{gathered} (6^(-5))^2 \\ \text{solve} \\ (6^(-5))^2=6^(-5\cdot2)=6^(-10) \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/p83n3t1fsr5sylc53ibridv9f52i2wx6el.png)
so, this is an answer
Step 4
![\begin{gathered} (6^(-3))/(6^7) \\ \text{solve} \\ (6^(-3))/(6^7)=(1)/(6^3\cdot6^7)=(1)/(6^(3+7))=(1)/(6^(10))=6^(-10) \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/jnjsmlaygbz24b902d8lrbeyuwcih47n8w.png)
so, this is an answer
Step 5
![\begin{gathered} (6^5\cdot6^(-3))/(6^(-8)) \\ \text{solve} \\ (6^5\cdot6^(-3))/(6^(-8))=(6^(5-3))/(6^(-8))=(6^2)/(6^(-8))=6^2\cdot(1)/(6^(-8))=6^2\cdot6^8=6^(10) \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/vzzekuul7f7ddklpnwrouk68iuobxmuiv0.png)
so, this is not an answer
I hope this helps you