Answer:
Option (1) is correct.
The product of
is 
Step-by-step explanation:
Given, 
We have to find the product of above,
We have to multiply each term as ,
can be written as,

When we multiply each term we get,

These terms are same as we have filled in table below.
On adding like terms we get,


Thus, the product of
is 
Answer:
1
Step-by-step explanation:
x^2 + 2x + 1 = (x+1)^2
Answer:
rertyeryet
Step-by-step explanation:
Yeah the other guy is right. Please like I need the points !!!! :((
Haven't been taught this; but from what I searched up; I think the postulate for proving these shapes' congruence is Hypotenuse/Leg. I have no exact idea however. Correct me if I'm wrong :/