Question

Решите.
(х + у)2
(2 + а)2
(с + 7)2
(а + в)2
(m + n)2
(a + 8)2
(9 + b)2
(k+ 0,3)2
(d + 0,5)2
(0,2 + x)2
(a + 6)2
(в + 4а)2
(2х + 1)2
(11 + у)2
(6а + 2в)2

(a – b)2
(n – m)2
(с – 5)2
(p – q)2
(2m – n)2
(2a – 8)2
(6 – 3b)2
(5k – 0,3)2
(q – 0,1)2
(0,7 – x)2
(6 – 2b)2
(x – 3y)2
(2х – 5)2
(11 – d)2
(7а – 4в)2

(n - m)(n + m)
(x - y)(x + y)
(a + b) (a - b)
(2 - a)(a + 2)
(3 - x)(3 + x)
(a - 7)(7 + a)
(p + 5) (p - 5)
(8c – 9d)(8c + 9d)
(n - 3m)(n + 3m)
(7x – 3y)(7x + 3y)
(5n - 8m)(5n + 8m)
(x + 2y) (x – 2y)
(x2 + 5) (x2 - 5)
(a - 1)(a + 1)

Answer 1

(х + у)^2 = x^2 +2xy+y^2

(2 + а)^2 = 4+4a+a^2

(с + 7)^2 =c^2+14c=49

(а + в)^2 =a^2 +2aв+в^2

(m + n)^2 =m^2 +2mn+n^2

(a + 8)^2 =a^2 +16a+64

(9 + b)^2 =81+18b+b^2

(k+ 0,3)^2 =k^2 +0,6k+0,9

(d + 0,5)^2=d^2 +d+2,5