look

you know that

the square degree is 3 so I take one thing from every three thing

}=\sqrt[3]{}" alt="\sqrt[3]{}=\sqrt[3]{}" />

when I said

2^4=2(2)(2)(2) four times

take the fourth sqrt

if

when we said the square of degree four of A that's mean

we need a number if you multiply itself by itself four times we get A

it is clear or not