Uprosc wyrazenie stosując wzory skróconego mnożenia, a nastepnie oblicz wartosc wyrazenia dla x=-2, y=⅓
(4x-2)² - (y+1)³ - (6x-3) (6x+3)
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(4x-2)² - (y+1)³ - (6x-3) (6x+3) =
=16x²-4x+4-y³-3y²-3y-1-36x²+9=
=-y³-3y²-3y-20x²-4x+12
dla x=-2, y=⅓
=-(⅓)³-3(⅓)²-3⅓-20(-2)²-4(-2)+12=
=-1/27-⅓-1-80+8+12=
=-1/27-9/27-61=
=-(61 i 10/27)