Question

21+9÷3-2×3 al cuadrado usando expresion algebraica

Answer 1

21+9÷3-2×3^2= 21+3-2×9= 24-18= 6 Listo

Answer 2

$Hola \\ \\ 21+ \frac{9}{3} -2.(3)\² \\ \\ 21+3-2.(9) \\ \\ 24-18 \\ \\~~~ \boxed{\boxed{6}} \\ \\ ====================================\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Saludos!!$