Respuesta :

Answer:

Step-by-step explanation:

(2+3root7)(5−2root7)

=(2+3root7)(5+−2o2rt7)

=(2)(5)+(2)(−2o2rt7)+(3root7)(5)+(3root7)(−2o2rt7)

=10−4o2rt7+15o2rt7−6o4r2t14

=−6o4r2t14+11o2rt7+10