\(a.\sqrt{64}+2\sqrt{\left(-3\right)^2}-7\sqrt{1,69}+3\cdot\sqrt{\dfrac{25}{16}}\)
\(b.\left[-\sqrt{2,25}+4\sqrt{\left(-2,15\right)^2}-\left(3\sqrt{\dfrac{7}{6}}\right)^2\right]\cdot\sqrt{1\dfrac{1}{16}}\)
\(c.\dfrac{1}{2}+\left(\dfrac{-3}{5}\right)^2:\left(-1\dfrac{5}{4}\right)-\left|-\dfrac{2}{5}\right|\)
\(d.2^{-1}+\left(5^2\right)^3\cdot5^{-6}+4^{-3}\cdot32-2\cdot\left(-3\right)^2\cdot\dfrac{1}{9}\)
a: \(=8+2\cdot3-7\cdot1.3+3\cdot1.25=8.65\)
b: \(=\left(-1,5+4\cdot2,15-9\cdot\dfrac{7}{6}\right)\cdot\dfrac{5}{4}\)
\(=-\dfrac{17}{4}\)
c: \(=\dfrac{1}{2}+\dfrac{9}{25}:\dfrac{-9}{4}-\dfrac{2}{5}=\dfrac{1}{10}+\dfrac{-4}{25}=\dfrac{5}{10}-\dfrac{4}{50}=\dfrac{1}{50}\)
