A=(x+2)(x+5)(x+3)(x+4)-24=(x2+7x+10)(x2+7x+12)-24Dat t=x2+7x+11⇒A=(t-1)(t+1)-24=t2−1−24=t2−25=(t−5)(t+5) =($x^{2}+7x+6)(x^{2}+7x+16)$ =(x+1)(x+6)($x^{2}+7x+16)$
$A=(x+2)(x+5)(x+3)(x+4)-24=(
x2+7x+10)(x2+7x+12)-24
$Dat
$t=
$x2+7x+11$\Rightarrow
$A=(t−1)(t+1)−24=$t^{2}-1-24=t^{2}-25=(t-5)(t+5)$
$=(x^{2}+7x+6)(x^{2}+7x+16)$
$=(x+1)(x+6)(x^{2}+7x+16)$