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anonymous

  • one year ago

when using the binomial formula what is the correct expansion of (x+y)^4

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  1. misty1212
    • one year ago
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    lol same as it is without the "binomial formula" but we can do it for sure

  2. anonymous
    • one year ago
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    but the answer choices are long.

  3. misty1212
    • one year ago
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    the first term will be \(x^4\) the next one will be something times \(x^3y\) the third one will be something times \)x^2y^2\) the four will have a \(xy^3\) and the last will be \(y^4\)

  4. misty1212
    • one year ago
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    yeah it is long all right

  5. anonymous
    • one year ago
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    thank you :D

  6. misty1212
    • one year ago
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    the coefficients you can get from the fourth row of pascal's triangle http://www.mathsisfun.com/pascals-triangle.html

  7. misty1212
    • one year ago
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    you see it is \(1,4,6,4,1\)

  8. misty1212
    • one year ago
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    so final answer will be \[x^4+4 x^3 y+6 x^2 y^2+4 x y^3+y^4\] you want to check it?

  9. anonymous
    • one year ago
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    i go it. thank you!!

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