Question

Plisss . pomocy potrzebuje na dzisiaj
daje najjj.

Answer 1

A) ( x -3 ) ( x^2 + 4x - 2 ) =
= x^3 + 4x^2 - 2x - 3x^2 - 12x + 6 =
=x^3 + x^2 - 14x + 6 dla x = -2

(-2)^3 + (-2)^2 - 14 * (-2) + 6 =
= (-8) + 4 + 18 + 6 = (-4) + 24 = 20

b) ( x + 2 ) ( x - 1 ) ( 2x + 1 ) =
=( x^2 - x + 2x - 2) ( 2x + 1 ) =
=2x^3 + x^2 - 2x^3 - x + 4x^2 + 2x - 4x - 2 =
= 5x^2 - 3x - 2 dla x = -1

5 * (-1)^2 - 3 * (-1) - 2 = 5 * 1 + 3 - 2 =
= 5 + 1 = 6