Х=2-У
3(2-у)+4у=5
6-3у+4у=5
-3у+4у=5-6
1у=-1
у=-1:1
<u>у=-1
</u>х=2-1
<u>х</u>=1
<span>(x-3)^2>(x-4)(x+4)+1;
</span><span>(x-3)^2>x^2-16+1;
</span><span>x^2-6x+9>x^2-16+1;
</span><span>-6x+9>-16+1;
</span><span>9+16-1>6x;
</span><span>9+16-1>6x;
</span>24>6x;
x<4;
при x=-1/2
7/1=7
при x=0.5
9/1.5=18
при x=1
10/2=5
при x=3
6+8/4=12