= 1/2 - 1/2 nhân 1/2
= 1/2 - 1/4
= 1/4
hok tốt
=1/2 - 1/4 = 2/4 - 1/4 = 1/4
\(=\frac{1}{2}-\frac{1}{2}\times\frac{1}{2}=\frac{1}{2}-\frac{1}{4}=\frac{1}{4}\)
xin tiick
\(\frac{1}{2}-\frac{1}{2}\times\frac{1}{2}\)
\(=\frac{1}{2}-\frac{1}{4}\)
\(=\frac{1}{4}\)