P(x)=<span>2x^2 - 5x -</span>3x^2 - 1 +3(<span>x - 2 )=2x^2-5x-3x^2-1+3x-6=-x^2-2x-7</span>
9х=2+1
9х=3
х=3:9
х=3/9=1/3сокращаем по 3
X^2+(18-x)^2 = 256
x^2+324-36x+x^2 = 256
2x^2-36x+68 = 0
x^2-18x+34 = 0
Tg300=-<span>√3
ctg300=-1\</span><span>√3
-</span>√3+1\√3=-2\<span>√3</span>
=0,2^4*0,2^5=0,2^4+5=0,2^9=0,000000512