Question

Find the square of x+3y​

Answer 1

Answer:

Since we know that

(a+b)

2

=a

2

+2ab+b

2

(a−b)

2

=a

2

−2ab+b

2

Now,

(i)

(x+3y)

2

=x

2

+2×x×3y+(3y)

2

=x

2

+6xy+9y

2

Step-by-step explanation:

I hope it's help you

Answer 2

Step-by-step explanation:

Using the identity,

(a+b)²=a²+2ab+b²