-4х+30,4=8х-14,4-3,2
8х+4х=30,4+14,4+3,2
12х=48
х=48:12
х=4
Ответ: 4.
<span>2 *4 в степ. 1/2=4</span>
<span><span>2* 1 в степ.1/2.=2</span></span>
<span><span>4-2=2</span></span>
1
{12y-x=36/*5⇒60y-5x=180
{5x+3y=15
прибавим
63y=195
y=195:63
y=3 2/21
x=12*195/63-36=(260-252)/7=1 1/7
{4yx-25=0
{3x-y=8⇒y=3x-8
4x*(3x-8)-25=0
12x²-32x-25=0
D=1024+1200=2224
x1=(32-4√139)/24=4/3-√139/6⇒y1=3*(4/3-√139/6)-8=-4-√139/2
x2=4/3+√139/6⇒y2=3*(4/3+√139/6)-8=-4+√139/2