What Is The Answer Of (3+A+B)\Xb2=?

What is the answer of (3+a+b)²=?

 

Answer:

a² + 2ab + b² + 6a + 6b + 9

Step-by-step explanation:

The pattern for square of a trinomial:

(a + b + c)² = a² + b² + c² + 2(ab + bc + ac)

Expand or solve for the product:

(3 + a + b)²

=  3² + a² + b² + 2(3a + 3b + ab)

= 9 +  a² + b² + 6a + 6b + 2a

Arrange in standard form:

a² + 2ab + b² + 6a + 6b + 9


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