Question

Помогите решить!!!!

(2+3х)(5-х)-(2-3х)(5+х) при х=-1,1

 

 

Answer 1

(2+3х)(5-х)-(2-3х)(5+х) при х=-1.1 10-2х+15х-3х^2-10-2х+15х+3х^2=26х=> 26×(-1.1)=28.6 Ответ:28.6

Answer 2

(2+3*(-1.1))*(5-(-1.1)-(2-3*(-1.1)(5-1.1)=(5.3*(-5.5)-(-1.3*-5.5)=29.15-7.15=22