please Give me an explanation for the correct answer.thanks

please Give me an explanation for the correct answer.thanks

Tutors, sign in to answer this question.

Marked as Best Answer

Just to add my two cents worth...which really isn't that much.. :( your could do as above...with the first answer....another way might be to begin: (a + b)^4 the quantity a plus b to the 4th power take (a + b)^2 times (a + b)^2 with (a + b)^2 = a^2 + 2ab + b^2 (a + b)^2 times (a + b)^2 = (a^2 + 2ab + b^2)(a^2 + 2ab + b^2) now multiply each of the expressions in each trinomial, keeping like terms in line to keep from getting confused: a^2 (a^2 + 2ab + b^2) = a^4 + 2a^3 b + a^2 b^2 2ab (a^2 + 2ab + b^2) = 2a^3 b + 4a^2 b^2 + 2ab^3 b^2 (a^2 + 2ab + b^2) = a^2 b^2 + 2ab^3 + b^4 now add all three together under like-terms a^4 + 4a^3 b + 6a^2 b^2 + 4ab^3 + b^4 I have my students do it this way...it is less confusing...the important things to remember is keep all like-terms in alignment AND the more you do these kinds of problems...the easier they will get and the better you'll get at doing these kinds of problems

(a + b)^4 = a^4 + 4a^3b + 6a^2b^2 + 4ab^3 + b^4

Hi Miss Erin,

can you explain me how to get 6a^2b^2

Already have an account? Log in

By signing up, I agree to Wyzant’s terms of use and privacy policy.

Or

To present the tutors that are the best fit for you, we’ll need your ZIP code.

Your Facebook email address is associated with a Wyzant tutor account. Please use a different email address to create a new student account.

Good news! It looks like you already have an account registered with the email address **you provided**.

It looks like this is your first time here. Welcome!

To present the tutors that are the best fit for you, we’ll need your ZIP code.

Please try again, our system had a problem processing your request.

Alan T.

Alan, Santa Clara University Tutor

$8.75 per 15 min

View Profile >

Jacinthah W.

Effective and passionate tutor specializing in Excel, Maths, English

$10 per 15 min

View Profile >

Kristen B.

Patient and Enlightening Physics and Mathematics Tutor

$8.75 per 15 min

View Profile >

## Comments

Thank you very much for the help Mr John G. appreciate you.your students are lucky!