Question

(3+y)²=9+3(___)+y². options (y,2y,3y,4y). answer with prosses.​

Answer 1

Answer:

2y

Step-by-step explanation:

As we know, (a + b)² = a² + 2ab + b²

Now, (3 + y)² = (3)² + (2 × 3 × y) + y²

(3 + y)² = 9 + (3 × 2 × y) + y²

So, the answer is 2y.

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Answer 2

Answer:

2y

Step-by-step explanation:

using formula a²+b²+2ab, (a=3, b=y²)

putting values,

=(3)²+(y)²+2×(3)(y)

=9+3(2y)+y²

So, the answer is 2y