Answer:
the answer is 1,2 and 4 hope it helps
7:9
Step-by-step explanation:
Just divide 35 and 45 by 5.
Is this
x^2 - 2xy + y^2.
(x - y)^2
= (x - y)(x - y)
= x(x -y) - y(x - y)
= x^2 - xy - xy + y^2
= x^2 - 2xy + y^2.
