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4 January, 18:26

What is the sum of the polynomials?

(7x3 - 4x2) + (2x3 - 4x2)

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Answers (2)
  1. 4 January, 21:23
    0
    Do 7*3=__,4*2=__, 2*3=__, 4*2=__

    then subtract in parentheses (__-__) + (__-__)

    then add__+__

    --and find out what polynomials are--
  2. 4 January, 22:11
    0
    (7x³-4x²) + (2x³-4x²)

    = 7x³-4x²+2x³-4x²

    Add like terms,

    =9x³-8x²
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