Question

la operacion de cada trinomio
$21a {}^{2} + 11a - 2$

$30a { { }^{2} }^{? } + 17a - 21$
$6a {}^{2} + 22a + 20$
$8a {}^{2} - 2a - 15$
​

Answer 1

Respuesta:

$21a^2+11-2 = (7a-1)(3a+2)$

$30a^2+17a-21= (5a-3)(6a+7)$

$6a^2+22a+20=(3a+5)(2a+4)$

$8a^2-2a-15=(4a-5)(2a+2)$