Question

Escribe los coeficientes de desarollo de $(a+b)^{7}$

Answer 1

Aqui esta:
a^{7} +7a^{6} b+21a^{5} b^{2} +35a^{4} b^{3}+35a^{3} b^{4} +21a^{2} b^{5} +7ab^{6} +b^{7}