Question

りり

答えをとりあえず書いたのですが、全く意味が理解できないです😭😭

やり方を教えて欲しいです🙏🙏

1
(k+2) (k-1) (k²-k+2)
= (K²+K-2) (k² (+2)
{K²+ (K-2)}{(c² (K-2)}
= (K²)² (K-2)²
=2
K² (k² 4k+4)
***-1²+46-4
(1) (32-4+1) (22+y-1)
= {32-(y-1)}{2x + (y-1)}
Z. 2x²+ {3. (y-1))-(y-1)-232- (y-1)²
= 622 (4-172-(y²-24+1)
=6x²+ xy-2-y²+ 24-1
(8) (2a-2b+c) (a-b-c)
{2(a+b+c}{(a+b)-c}
2-1-(a-61+ 12 (-c7+C1} (a+b)+c-(-c)
=2(0-2ab+67-c(a-67-c²
=20²-4ab+26²-ac+60-c²
"= 20² + 26 ²- C²-4ab+bc-ca