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descompune in factori ecuatia de gradul 2: a)x²-5x-14 b)3x²-4x-4​

Răspuns :

Răspuns:

[tex]a[/tex]) x² - 5x - 14 = x² + 2 - 7x - 14 = x(x + 2) - 7(x + 2) = (x + 2)(x - 7)

[tex]b[/tex]) 3x² - 4x - 4​ = 3x² - 6x + 2x - 4 = 3x9x - 2) + 2(x - 2) = (x - 2)(3x + 2)