Assuming your original expression was 3√(27x¹⁸), the answer is 9x⁹√(3).
We split up the radicand into perfect squares. Once we do, we take out the things that were squared:

Both are right b/c like sean says you can add zero and itll still be -100 but candice is also right b/c because you can add any # to that -100 but you can also add a negative # to get it back to -100. for example: -100+23= -77 but if you also add a negative 23 it would be right back to -100.
Answer:
Gasto en postre= $75
Step-by-step explanation:
Dada la siguiente información:
Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida.
<u>Para calcular la cantidad a gastar en el postre, debemos usar la siguiente formula:</u>
Gasto en postre= presupuesto total*porcentaje para postre
Gasto en postre= 500*0.15
Gasto en postre= $75