Question

expand by using identity (x+2)^2​

Answer 1

Step-by-step explanation:

Given: (x + 2)^2

since, (a + b)^2 = a^2 + 2ab + b^2

where, we have to put in our equation a = x and b = 2,

Now, we get

→ (x)^2 + 2(x)(2) + (2)^2

→ x^2 + 4x + 4 Ans.

Answer 2

Answer:

Expand (x+ xx )2

using appropriate identity

Answer

Using the identity: (a+b)

2 =a 2+b2+2ab.

Given:(x+ x1 ) 2

and apply the above

identity by taking a=x and b= x1in the given identity.

We get, (x+ x1 ) 2 =x 2 +( xx1) 2 +(2×x× x1 )=x 2+ x 21 +2

Hence, (x+x1 ) 2 =x 2 +2+x21

.

Step-by-step explanation:

hope it's help you dear