Question

[(-1/2)la -2×3la -2+0,(6)]la -1 ×10

Answer 1

$[( \frac{-1}{2}) ^{2}*3 ^{2} -2+0,(6)] ^{-1} *10=[(- \frac{3}{2}) ^{2}-2+ \frac{3}{5})^{-1}*10=[(- \frac{3}{2} ^{2}+ \frac{3}{5}] ^{-1}$$*10=( \frac{9}{4}-2+ \frac{3}{5}) ^{-1}*10= (\frac{17}{20}) ^{-1}*10= \frac{20}{17}*10= \frac{200}{17}$ ≈ $11 \frac{13}{17}$, ≈ 11.76471