Question

what is the product of (a + b) (3a + b) ​

Answer 1

Step-by-step explanation:

(a+b)(3a+b)

3a^2+ab+3ab+3b^2

3a^2+3b^2+4ab

Answer 2

Answer:

Here is your answer

Step-by-step explanation:

a( 3a + b) + b( 3a + b)

3a^2 + ab + 3ab + b^2

3a^2 + 4ab + b^2

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