Question

e.
$(2b + 3c) {}^{2}$
f.
$(h - 3 ) {}^{2}$
me ajudem
​

Answer 1

$\large\boxed{\begin{array}{l}\tt e)\\\sf(2b+3c)^2=(2b)^2+2\cdot2b\cdot3c+(3c)^2\\\sf (2b+3c)^2=4b^2+12bc+9c^2\\\tt f)\\\sf (h-3)^2=h^2-2\cdot h\cdot3+3^2\\\sf (h-3)^2=h^2-6h+9\end{array}}$