\(M=\frac{258^2-242^2}{254^2-246^2}\)
\(=\frac{\left(258-242\right)\left(258+242\right)}{\left(254-246\right)\left(254+246\right)}\)
\(=\frac{16.500}{8.500}\)
\(=2\)
p/s: chúc bạn hk tốt
\(M=\frac{258^2-242^2}{254^2-246^2}\)
\(M=\frac{\left(258-242\right)\left(258+242\right)}{\left(254-246\right)\left(254+246\right)}\)
\(M=\frac{16.500}{8.500}=\frac{16}{8}=2\)