(1,72*6,3+8,2):5,42-(0,16)=3,352
Может, я и ошибаюсь..
y'(x)= (15x^2 * tgx)'= 30x*tgx + 15x^2 * (1/cos^2 x) = 30x* tgx + 15x^2/cos^2x
А.xz+xy+2z+2y = ...x(z+y)+2(z+g)<span>
Б.2ab-2ac+3b-3c = ...2</span>a(b-c)+3(b-c)<span>
В.5ax+10ay+bx+2by = ...5</span>a(x+2y)+b(x+2y)<span>
Г.3ac+6bc+7ax+14 bx = ...3</span>c(a+2b)+7x(a+2b)<span>
Д.2ax+2xy-an-yn = ...2</span>x(a+y)-n(a+y<span>)</span>
апостол 1 создал 1 книгопечтание
(2a-3b)^2=4a^2-12ab+9b^2;
(5-a)(5+a)=25+5a-5a-a^2=25-a^2;
(7x+10y)(10y-7x)=70xy-49x^2+100y^2-70xy=100y^2-49x^2