c^3-8c^2+16c=0
c(c^2-8c+16)=0
c=0 c^2-8c+16=0
D=0
c=4
Ответ: 0; 4
3√2-5√8+√32=3√2-10√2+4√2=-3√2
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<span>5-6х<=3</span>