Przedstaw wyrażenia w najprostszej postaci i oblicz ich wartości liczbowe .
a) (-2) * (3x2 [do kwadratu] + 1,5x -1)+ (-1,5 * (2x2 - 4x +2) dla x= -1
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-2 * (3x² + 1,5x - 1) + (-1,5 *(2x² - 4x + 2)=
= -6x² - 3x + 2 - 3x² +6x - 3 =
= -9x² +3x - 1 =
= -9*1 - 3 - 1 =
= -9 - 4 =
= -13