<span> 21 <span>></span> 18,75; 8,006<span><</span> 9,0001; 7,2 <span><</span> 7,2005; 4,009 <span>></span> 3,999.</span>
3√2-5√8+√32=3√2-10√2+4√2=-3√2
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5х - 7 = 3х - 6
5х - 3х = 7 - 6
2х = 1
х = 0,5
В)10x^4-50x^2=10x^2(x^2-25)=10x^2(x-5)(x+5)
X1=0 X2=5 X3=-5
г)3x^3-108x^2=3x^2(x-36)
X1=0 X2=36