a)5^3.x=5^7
x=5^7:5^3
x=5^4
x=625
vậy x=625
b)(x-2)17^3=17^5
x-2=17^5:17^3
x-2=17^2
x-2=289
x=289+2
x=291
vậy x=291
c)(10^2-6^2)(x-3)=8^3
(100-36)(x-3)=512
64(x-3)=512
x-3=512:64
x-3=8
x=8+3
x=11
vậy x=11
d)(6^2+8^2)x=10^3
(36+64)x=1000
100x=1000
x=1000:100
x=10
vậy x=10
nhớ **** cho mình nha