Question

Розкладіть на множники вираз x-y+x^2-y^2

Answer 1

(x-y)+(x^2-y^2)=(x-y)+(x-y)(x+y)=(x-y)(1+x+y)

Answer 2

x-y+x^2-y^2=-(y-x)*(y+x+1)=(x-y)*(y+x+1)