Question

Answer 1

a: \(A=2\cdot2^2-\dfrac{1}{3}\cdot9=8-3=5\)

b: \(B=\dfrac{1}{2}\cdot\left(-2\right)^2-3\cdot\left(-\dfrac{1}{3}\right)^2=2-\dfrac{1}{3}=\dfrac{5}{3}\)

c: \(P=2\cdot\dfrac{1}{4}+3\cdot\dfrac{-1}{2}\cdot\dfrac{2}{3}+\dfrac{4}{9}\)

\(=\dfrac{1}{2}+\dfrac{4}{9}-1=\dfrac{9+8}{18}-1=\dfrac{17}{18}-1=-\dfrac{1}{18}\)

d: \(D=12\cdot\dfrac{-1}{3}\cdot\dfrac{1}{36}=-4\cdot\dfrac{1}{36}=-\dfrac{1}{9}\)