Question

5) \(\left(1+\dfrac{2}{3}-\dfrac{1}{4}\right).\left(0.8-\dfrac{3}{4}\right)^2\)

Answer 1

\(\left(1+\dfrac{2}{3}-\dfrac{1}{4}\right)\cdot\left(\dfrac{4}{5}-\dfrac{3}{4}\right)^2\)

\(=\dfrac{12+8-3}{12}\cdot\left(\dfrac{16-15}{20}\right)^2\)

\(=\dfrac{17}{12}\cdot\dfrac{1}{20^2}=\dfrac{17}{4800}\)