Question

giúp tuiii với

Answer 1

\(B=-5\sqrt{\dfrac{9}{16}}+4\sqrt{0,36}-6\sqrt{0,09}\)

\(B=-5.\dfrac{3}{4}+4\sqrt{\dfrac{36}{100}}-6\sqrt{\dfrac{9}{100}}\)

\(B=-\dfrac{15}{4}+4.\dfrac{3}{5}-6.\dfrac{3}{10}\)

\(B=-\dfrac{15}{4}+\dfrac{12}{5}-\dfrac{9}{5}\)

\(B=-\dfrac{15}{4}+\dfrac{3}{5}=-\dfrac{63}{20}\)

Answer 2

\(=-5\cdot\dfrac{3}{4}+4\cdot0.6-6\cdot0.3\)

\(=-\dfrac{15}{4}+2.4-1.8=-\dfrac{63}{20}\)

Answer 3

=-5.-3/4+4.3/5-6.3/10

=-15/4+12/5-18/10

=-27/20-18/10

=-63/20