<span>3tg 3П/4 * cos 3П/4 - sin 3П/4 +2 =3*(-1)*(-</span>√2/2)-√2/2+2=√2+2<span>
3sin60градусов * cos60 +2cos90 *tg45 -3=3*</span>√3/2*1/2+2*0*1-3=3√3/4-3=
=3(√3-4)/4
Х+8/3+3=х/6
<span>6х+16+18=х
5x=-34
<em><u>x=-6.8</u></em></span>
(4Х-3)(2-3Х)+12Х^2=8х-6-12х ^2+9х +12Х^2=17х-6