Jak zamieniać funkcje kwadratowa na postac iloczynową bez obliczania delty itp.
np.
1)
2 x^2 + x - 3 = 2*( x^2 + x/2 - 3/2) = 2*( x + 3/2)*(x - 1)
2)
-x^2 + x + 3 = - ( x ^2 - x - 2) = - (x -2)*(x + 1)
3)
x^2 - x - 3 = (x -3)*( x + 2)
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1)
2 x^2 + x - 3 = 2*( x^2 + x/2 - 3/2) = 2*( x + 3/2)*(x - 1)
2)
-x^2 + x + 3 = - ( x ^2 - x - 2) = - (x -2)*(x + 1)
3)
x^2 - x - 3 = (x -3)*( x + 2)