Question

evaluate (x+3)^2 using appropriate identity​

Answer 1

Answer:

Step-by-step explanation:

Using the identity is (a−b)  

2

=a  

2

+b  

2

−2ab.

Given: (y−3)  

2

 we apply the above identity by taking  

a=y and b=−3  

We get, (y−3)  

2

=(y)  

2

+(3)  

2

−(2×y×3)=y  

2

+9−6y

Hence, (y−3)  

2

=y  

2

−6y+9.