Toán Lớp 8: A = (45^2-90.21+21^2)
—————————–
44^2-22^2
Có giá trị là :A 1 B 2 C 3 D 4
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 8: A = (45^2-90.21+21^2)
—————————–
44^2-22^2
Có giá trị là :A 1 B 2 C 3 D 4
Comments ( 1 )
A = \frac{{{{45}^2} – 90.21 + {{21}^2}}}{{{{44}^2} – {{22}^2}}}\\
A = \frac{{{{\left( {45 – 21} \right)}^2}}}{{66.22}}\\
A = \frac{{{{24}^2}}}{{66.22}}\\
A = \frac{{576}}{{1452}}\\
A = \frac{{48}}{{121}}\\
\Rightarrow SAI\,\,DE
\end{array}\]