Объяснение:
16a^2 - 9b^2= (4а + 3b)•(4а-3b)
121-а^2= (11^2) - a^2 = (11-a) (11+a)
36 + 12y+y^2= (y^2) +2•y•(6)+6^2 =(x+6)^2
x^2 – 28х+196 = x^2-2-х• (14)+(14^2)=(x-14)^2
z^3-125= z^3-5^3 =(x-5)(x^2+5x+25)
Объяснение:
16a^2 - 9b^2= (4а + 3b)•(4а-3b)
121-а^2= (11^2) - a^2 = (11-a) (11+a)
36 + 12y+y^2= (y^2) +2•y•(6)+6^2 =(x+6)^2
x^2 – 28х+196 = x^2-2-х• (14)+(14^2)=(x-14)^2
z^3-125= z^3-5^3 =(x-5)(x^2+5x+25)