Appliquer la formule : $\left(a+b\right)^3$$=a^3+3a^2b+3ab^2+b^3$, où $a=2$, $b=-y^2$ et $a+b=2-y^2$

Simplify $\left(y^2\right)^2$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $2$ and $n$ equals $2$

Simplify $\left(y^2\right)^3$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $2$ and $n$ equals $3$