Question

Срочно !!!! Номер 31.8 только (2,4) даю 25 балов

Answer 1

2) х(2х-1)-(6+х)(6-х)+(х-10)(10-х) = 2х^2-x-36-x^2+100-x^2 = 64+101 = 165.
4) (1,5+c)(c-1,5)-(c+8)(c-8)-2,5(c-24,5) = c^2-2,25-c^2-64-2,5c+61,25 = -2,5c-5 = -1 2/3 - 5 = - 6 2/3