tiim x thuộc N a)5^x-125=5.10^2 b)3^x.3^5=81^2 c)2^x+4.2^x=5.25 d) 3.7^2x-4-2=7^2x-4 e)9^x+2+9^2.8^2=0 f)(x-5) ^x+2+(x-5)^x+4(x khác 5) g)16

13/07/2021

By Kaylee

tiim x thuộc N
a)5^x-125=5.10^2
b)3^x.3^5=81^2
c)2^x+4.2^x=5.25
d) 3.7^2x-4-2=7^2x-4
e)9^x+2+9^2.8^2=0
f)(x-5) ^x+2+(x-5)^x+4(x khác 5)
g)16 { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": "Question", "name": " tiim x thuộc N a)5^x-125=5.10^2 b)3^x.3^5=81^2 c)2^x+4.2^x=5.25 d) 3.7^2x-4-2=7^2x-4 e)9^x+2+9^2.8^2=0 f)(x-5) ^x+2+(x-5)^x+4(x khác 5) g)16