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x²-10x+25-1=0
x²-10x+24=0 √Δ=b²-4ac=100-4*1*24=100-96=√4=2
x1=-10-2 \2= -6 x2=-10+2\2= -4
x^2+10x+25-1=0
x^2+10x+24=0
delta:(-10)^2 *4*1*24=100-96=4
pierwiastek z delty =2
x(1)=-10-2/2*1=-6
x(2)=-10+2/2*1=-4