Toán Lớp 7: 5 mũ x cộng 5 mũ x cộng 2 bằng 650
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 7: 5 mũ x cộng 5 mũ x cộng 2 bằng 650
Comments ( 2 )
=>5^x+5^x . 5^2=650
=>5^x+5^x . 25=650
=>5^x . (1+25)=650
=>5^x . 26=650
=>5^x=650:26
=>5^x=25
=>5^x=5^2
=>x=2
Vậy x=2