Rozwiąż równanie.
a) (x-1)kwadrat -(x+2)kwadrat = 6
b) (3-x)kwadrat +(2x+1)kwadrat = 5x kwadrat
c) xkwadrat - (x-4)(4+x) = 2x
d) (x/2 + 3) (x/2-3)= (x/2 - 1) kwadrat
e) (2x-1)kwadrat = (2x +3)kwadrat
f) (3x+2)kwadrat = (3x-4)(3x+4)
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