Объяснение:
(c+13d)2−(13c+d)2 = 2(c+13d - (13c+d)) = 2(c+13d -13c-d) = 2(-12c+12d) = -12*2(c-d) = -24(c-d)
-24(c-d)
Объяснение:
(c+13d)2−(13c+d)2 = 2(c+13d - (13c+d)) = 2(c+13d -13c-d) = 2(-12c+12d) = -12*2(c-d) = -24(c-d)
-24(c-d)
Объяснение:
(c+13d)2−(13c+d)2 = 2(c+13d - (13c+d)) = 2(c+13d -13c-d) = 2(-12c+12d) = -12*2(c-d) = -24(c-d)