Question

cuanto es simplificado[(-3-6)²(5×3÷2)-(-3+9×2)]

Answer 1

$\left(-3-6\right)^2\left(5\cdot \frac{3}{2}\right)-\left(-3+9\cdot \:2\right)$
$=\left(-3-6\right)^2\cdot \:5\cdot \frac{3}{2}-\left(-3+9\cdot \:2\right)$
$\left(-3-6\right)^2\cdot \:5\cdot \frac{3}{2}=\frac{1215}{2}$
$-\left(-3+9\cdot \:2\right)=-15$
$=\frac{1215}{2}-15=-\frac{15}{1}+\frac{1215}{2}=-\frac{15\cdot \:2}{2}+\frac{1215}{2}$
$=\frac{-2\cdot \:15+1215}{2}=\frac{1185}{2}$