Question

Descompuneti in factori trinomul:a)x2+5x-14;3x2-4x-4
DAU COROANA!

Answer 1

Răspuns:

x² + 5x - 14 = (x + 7)(x - 2)

3x² - 4x - 4 = (x - 2)(3x + 2)

Explicație pas cu pas:

x² + 5x - 14 =

x² + 7x - 2x - 14 =

x (x + 7) - 2(x + 7) =

(x + 7)(x - 2)

3x² - 4x - 4 =

3x² + 2x - 6x - 4 =

3x² - 6x + 2x - 4 =

3x (x - 2) + 2(x - 2) =

(x - 2)(3x + 2)

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