Question

Ayudaa es para hoy porfavor doy coronas ​

Answer 1

Respuesta:

$(a {}^{3} + 7a {}^{2} b + 5b {}^{3}) + (8a {}^{3} + 4a {}^{2} b - 8b {}^{3} ) + (2a {}^{3} + a {}^{2} b - 5b {}^{3} ) \\ \\ \\ = a {}^{3} + 7a {}^{2} b + 5b {}^{3}+ 8a {}^{3} + 4a {}^{2} b - 8b {}^{3} + 2a {}^{3} + a {}^{2} b - 5b {}^{3} \\ \\ = a{}^{3} + 8a {}^{3} + 2a {}^{3} + 7a {}^{2}b + 4a {}^{2} b+ a {}^{2} b+ 5b {}^{3}- 8b {}^{3} - 5b {}^{3} \\ \\ = 11a {}^{3} + 11a {}^{2}b - 8b {}^{3}$