Question

descompuneti in factori polinomula)x la puterea 2 -5x -14​

Answer 1

Răspuns:

(x+2) (x-7)

Explicație pas cu pas:

x^2-7x+2x-14

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

(x+2) (x-7)

Answer 2

Răspuns:

$\bf\red\:x {}^{2} - 5x - 14 \\= \bf\red\:x {}^{2} + 2x - 7x - 14 \\ =\bf\red\:x \times (x + 2) - 7x - 14 \\ = \bf\red\:x \times (x + 2) - 7 \times (x + 2) - - scoatem \: factor \: comun \: pe \: " x + 2 " \\= >\bf\red\: (x + 2) \times (x - 7)$