Rozwiąż równanie
x(x-4)-2(x+3)+4x=x(x-2)=½(x^2+3)
x2-4x-2x+6+4x=x2-2x=1/2x2+3/2
x2-4x-2x+4x-x2+2x-1/2x2=3/2-6
-1/2x2=-9/2 /(-1/2)
x2=9
x=3
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x2-4x-2x+6+4x=x2-2x=1/2x2+3/2
x2-4x-2x+4x-x2+2x-1/2x2=3/2-6
-1/2x2=-9/2 /(-1/2)
x2=9
x=3