1) 25-10a+a^2
2) c^2+12c+36
3) 4a^2-12ab+9b^2
4) 16c^2+24ck+9k^2
Объяснение:
(5-а)^2 = 5^2-2*5*a+a^2 = 25-10a+a^2
(c+6)^2 = c^2+2*6*c+6^2 = c^2+12c+36
(2a-3b)^2 = (2a)^2-2*2a*3b+(3b)^2 = 4a^2-12ab+9b^2
(4c+3k)^2 = (4c)^2+2*4c*3k+(3k)^2 = 16c^2+24ck+9k^2
1) 25-10a+a^2
2) c^2+12c+36
3) 4a^2-12ab+9b^2
4) 16c^2+24ck+9k^2
Объяснение:
(5-а)^2 = 5^2-2*5*a+a^2 = 25-10a+a^2
(c+6)^2 = c^2+2*6*c+6^2 = c^2+12c+36
(2a-3b)^2 = (2a)^2-2*2a*3b+(3b)^2 = 4a^2-12ab+9b^2
(4c+3k)^2 = (4c)^2+2*4c*3k+(3k)^2 = 16c^2+24ck+9k^2