Question

Al factorizar 2x2−11x−21 se obtiene:
Seleccione una:
a. (2x+3)(x−7)
b. (2x+3)(2x−7)
c. (2x−3)(x+7)
d. (2x−3)(2x+7)

Answer 1

$2x^2-11x-21\\ (2x+3)(x-7)$

Answer 2

2x2−11x−21
(2x)2 - 11(2x) - 42
(2x - 14) (2x + 3)/(2 * 1)
(x - 7) (2x +3)