X^2 - 16X + 63 = ( X - 9)*( X - 7 )
D = 256 - 252 = 4 ; √ D = 2
X1 = ( 16 + 2 ) : 2 = 9
X2 = ( 16 - 2 ) : 2 = 7
3X^2 - 5X - 2 = 3 * ( X - 2 ) * ( X + 1 )
D = 25 + 24 = 49 ; √ D = 7
X1 = ( 5 + 7 ) : 6 = 2
<span>X2 = ( 5 - 7 ) : 6 = - 1/3</span>
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4*2√3+1/8*4√3-3*6√3=8√3-0,5√3-18√3=-10,5√3
4k^2-p^2=(2k-p)(2k+p)
(p-2k)(-p-2k)/(p-2k)^2=2k+p/2k-p