Question

Tự luận

Answer 1

1: \(\frac14+\frac12-\frac54+\frac32\)

\(=\left(\frac12+\frac32\right)+\left(\frac14-\frac54\right)\)

=2-1=1

2: \(\left(-\frac14\right)^2\cdot\frac{4}{11}+\frac{7}{11}\cdot\left(-\frac14\right)^2\)

\(=\frac{1}{16}\cdot\frac{4}{11}+\frac{7}{11}\cdot\frac{1}{16}\)

\(=\frac{1}{16}\left(\frac{4}{11}+\frac{7}{11}\right)=\frac{1}{16}\cdot\frac{11}{11}=\frac{1}{16}\)