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(x2-6x+18)/3+(x2-3x+5)/2
(x² -6x +18) /3 + (x²- 3x +5) /2=
Sprowadzam wyrażenie do wspólnego manownika
wspólny mianownik to 6
=[ 2(x² -6x +18) + 3(x²- 3x +5)] : 6 =
=[ 2x² -12x +36 + 3x²- 9x +15] : 6 =
= (5x² -21x + 51) :6 =
= 5/6x² - 21/6x + 51/6 =
= 5/6x² - 7/2x + 17/2