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PatrickStar323 PatrickStar323
  • 05-03-2015
  • Mathematics
Answered

Write each of the following as a polynomial in descending powers of its variable

  1. 7x(x+3)

  2. (7x+1)(x+3)

  3. (x²+x)²

Verified Answer :

Panoyin
Panoyin Panoyin
  • 07-03-2015
  1. 7x(x + 3)
        7x(x) + 7(3)
        7x² + 21

    2. (7x + 1)(x + 3)
        7x² + 21x + x + 3
        7x² + 22x + 3

    3. (x² + x)²
        (x² + x)(x² + x)
       x^4 + x³ + x³ + x²
       x^4 + 2x³ + x²
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