(x³-6x²+32)/(x²-8x+16)=[x²(x+2)-8x(x+2)+16(x+2)]/9x²-8x+16)=
=(x+2)(x²-8x+16)/(x²-8x+16)=x+2
10a^2+a-7+2a-a^2-3a+3=9a^2-4=9*1/9-4=1-4=-3
<span>(sin^2t*cos^2t+cos^4t) / (1-sin^4t-sint*cos^2t)=
=[cos</span>²t(sin²t+cos²t)]/[(1-sin²t)(1+sin²t)-sint*cos²t)]=
=cos²t/[cos²t(1+sin²t)-sint*cos²t]=cos²t/[cos²t(1+sin²t-sint)]=1/(1+sin²t-sint)
7 корней из 1/50≈0,99, 7/10, 1/5 корень из 6<span>≈0,082</span>