Question

Giúp với ạ! Cần gấp

Answer 1

a: Ta có: \(\left(-0.4\right)^2-\left(-0.4\right)^3\cdot\left(-3\right)\)

\(=0.16-\left(-0.64\right)\cdot\left(-3\right)\)

\(=0.16-1.92\)

=-1,76

b: Ta có: \(\left(1\dfrac{3}{4}\right)^3-\left(1\dfrac{3}{4}\right)^2+\left(-1.031\right)^0\)

\(=\dfrac{343}{64}-\dfrac{49}{16}+1\)

\(=\dfrac{343-196+64}{64}\)

\(=\dfrac{211}{64}\)