Question

Answer 1

a: \(5\cdot\sqrt{\left(-2\right)^6}\)

\(=5\cdot\sqrt{64}=5\cdot8=40\)

b: \(-0,8\cdot\sqrt{\left(-0,125\right)^2}\)

\(=-0,8\cdot0,125\)

=-0,1

c: \(\sqrt{\left(-2\right)^6}=\sqrt{64}=8\)

d: \(-4\cdot\sqrt{\left(-3\right)^6}=-4\cdot\sqrt{3^6}=-4\cdot3^3=-4\cdot27=-108\)

e: \(2\cdot\sqrt{\left(-5\right)^6}+3\cdot\sqrt{\left(-2\right)^8}\)

\(=2\cdot\sqrt{5^6}+3\cdot\sqrt{2^8}\)

\(=2\cdot5^3+_{}3\cdot2^4=2\cdot125+3\cdot16=250+48=298\)