Toán Lớp 6: (9+2x)²-2: (-3)²=7
giúp mik với
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 6: (9+2x)²-2: (-3)²=7
giúp mik với
Comments ( 2 )
(9+2x)²-2: (-3)²=7
=> (9+2x)²-2: 9=7
=> (9+2x)²-2=63
=> (9+2x)²=65
=> 9+2x=4225
=> 2x=4216
=>x=2108
Giải đáp:
$\text{(9+2x)^2-2:(-3)^2=7}$
$\text{⇔(9+2x)^2-2:9=7}$
$\text{⇔(9+2x)^2-2=7.9}$
$\text{⇔(9+2x)^2-2=63}$
$\text{⇔(9+2x)^2=63+2}$
$\text{⇔(9+2x)^2=65}$
$\text{⇒x ko có kết quả}$
$\text{Vậy x ko có kết quả}$
$@Lun$