Toán Lớp 9: (√2 – y√3)√2 – y√3=1
giải chi tiết
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 9: (√2 – y√3)√2 – y√3=1
giải chi tiết
Comments ( 1 )
$\left(\sqrt{2}-y\sqrt{3}\right)\sqrt{2}-y\sqrt{3}=1$
$⇒2-\sqrt{6}y-\sqrt{3}y=1$
$⇒2-\sqrt{6}y-\sqrt{3}y-2=1-2$
$⇒-\sqrt{6}y-\sqrt{3}y=-1$
$⇒-\left(\sqrt{6}+\sqrt{3}\right)y=-1$
$⇒\dfrac{-\left(\sqrt{6}+\sqrt{3}\right)y}{-\sqrt{6}-\sqrt{3}}=\dfrac{-1}{-\sqrt{6}-\sqrt{3}}$
$⇒y=\dfrac{\sqrt{6}-\sqrt{3}}{3}$