<span>3^(2x+1)-10*3^x+3<0</span>
<span>Найдите значение выражения</span> <span>при m= 2/15; n=-2</span>
15mn-2n+15m²-2m=15m(n+m)-2(n+m)=(n+m)(15m-2) =(-2+2/15)(15*2/15-2)=(-28/15)(2-2)=0
<span>5*5/9 - 1/2* 5/9 - 1/3 * 5 + 1/2*1/3=5/9(5-1/2)-1/3(5-1/2)=(5-1/2)(5/9-1/3)=9/2*2/9=1</span>
4х(х+2)
m(3+n)-2n(3+n)=(3+n)(m-2n)
(3a-4)(3a+4)
y(y^{2}+18y+81)=y(y+9)^{2}
Х•Х+11Х+24=0
Х•Х+11Х=24
12Х=24
Х=24:12
Х=2