Równania kwadratowe --
rozwiąż równania
*= kwadrat
a)x*-16x+64=0
b)4x*+4x+1=0
c)x(4+x)+x*=0
d)(x+1)(x-1)=(2x+5)(x+1)
a)0,5x*-x+8=0
b)x*-2x-3=0
c)(x+0,5)*=2x
d)-(x2)*+16x*=0
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c) 4x+x*+x*=4x=2x* /:2
2x* =4*