Toán Lớp 7: Tìm x :
a, 3^2 – 2^2 ( 5 + √x ) = -3
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: Tìm x :
a, 3^2 – 2^2 ( 5 + √x ) = -3
Comments ( 2 )
$⇒9-4(5+\sqrt{x})=-3$
$⇒4(5+\sqrt{x})=12$
$⇒5+\sqrt{x}=3$ (Vô lý vì $\sqrt{x}≥0∀x≥0)$