Korzystajac ze wzorów skruconego mnożenia doprowadź do najprostrzej postaci wyrażenia (x+1)³-(x-1)³+x(x²-1)i obliczjego wartościdla x=-¾
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(x+1)³-(x-1)³+x(x²-1)=
=x³+3x²+3x+1-x³+3x²-3x+1+x³-x=
=x³+6x²-x+2=
=(-¾)³+6*(-¾)²-(-¾)+2=
=-27/64-9/2+¾+2=
=-27/64-288/64+48/64+2=
=309/64+2=
=4⁵³/₆₄+2=
=6⁵³/₆₄