zapisz wyrażenie w prostszej postaci i oblicz jego wartość dla
x = -3
2(x^3+x^2-x-2)-x(2x^2-4x-4)
" ^ ,, - do potęgi ...
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2(x^3+x^2-x-2)-x(2x^2-4x-4) =
=2x^3 + 2x^2 - 2x -4 -2x^3+4x^2+4x =
= 6x^2+2x -4
x=-3
=6 * (-3)^2 + 2*(-3) - 4 = 6*9 -6 - 4 = 44