Rozwiaz rownanie: (x-5)(+5)=x kwadrat -100x 4(x+2)kwadrat -(2x-1)kwadrat=-8 Pilne!!!

(x-5)(x+5)=x²-100x x²-25=x-100x -25=-100x 100x=25 x=1/4 4(x+2)²-(2x-1)²=-8 4x²+16x+16-4x²+4x-1=-8 20x=-23 x=-23/20

a) (x-5)(x+5)=x²-100x x²-25=x²-100x 100x=25 x=0,25 b) 4(x+2)²-(2x-1)²=-8 4(x²+4x+4)-(4x²-4x+1)=-8 4x²+16x+16-4x²+4x-1=-8 20x=-23 x=-1,15