Răspuns:
Explicație pas cu pas:
a) (x+y)(x-y)
b)a^2-2^2=(a+2)(a-2)
c)x^2-3^2=(x+3)(x-3)
d)(5x)^2-y^2=(5x+y)(5x-y)
e)(4n)^2-m^2=(2n+m)(2n-m)
f) (6a)^2-7^2=(6a+7)(6a-7)
g)8^2-(5a)^2=(8+5a)(8-5a)
h)(3a)^2-(4b)^2=(3a+4b)(3a-4)
i) (8x)^2-(9y)^2=(8x+9y)(8x-9y)
j) (4q)^2-(7p)^2=(4q+7p)(4q-7p)
k) (n/10)^2-(2m)^2=(n/10+m)(n/10-m)
l)3^2-(bc)^2=(3+bc)(3-bc)
n) p^2-(ab)^2=(p+ab)(p-ab)
o) (4xy)^2-(3a)^2=(4xy+3a)(4xy-3a)
i)