Zadatak 0764
- Detalji
- Kategorija: Množenje polinoma
Test: MPo7BGII_154
Uprosti izraze:
a) \(2x(x-2)-x(2x+1)\);
b) \(3x^2-(3x-2)(x+2)\).
Rešenje:
a) \(2x(x-2)-x(2x+1)\);
$$2x(x-2)-x(2x+1)$$
$$=2x^2-4x-2x^2-x$$
$$=-3x$$
b) \(3x^2-(3x-2)(x+2)\)
$$3x^2-(3x-2)(x+2)$$
$$=3x^2-(3x^2+6x-2x-4)$$
$$=3x^2-3x^2-6x+2x+4$$
$$=-4x+4$$