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(x+1)totul la puterea a2-a -9
(x+2)la p a2-a -25
(x-3)la p a2-a -4
(x-5) p a2-a -16


Răspuns :

(x+1)² -9 =(x+1-3)(x+1+3)=(x-2)(x+4)(x+2)² -25=(x+2-5)(x+2+5)=(x-3)(x+7)(x-3)² -4 =(x-3-2)(x-3+2)=(x-4)(x-1)(x-5)² -16=(x-5-4)(x-5+4)=(x-9)(x-1)
(x+1)² - 9 = [(x+1)-3][(x+1)+3]=(x-2)(x+4)
(x+2)² - 25 = [(x+2)-5][(x+2)+5]=(x-3)(x+7)
(x-3)² - 4= [(x-3)-2][(x-3)+2] = (x-5)(x-1)
(x-5)² - 16 = [(x-5)-4][(x-5)+4]=(x-9)(x-1)