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10 December, 06:28

The sum of - 15x^2 - 5x + 11 and another polynomial expression is - 9x^2 + 3x - 10. What is the other polynomial expression?

A. 24x^2 + 8x - 8

B. 6x^2 + 8x - 21

C. - 24x^2 + 8x + 8

D. - 24x^2 + 8x - 8

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Answers (1)
  1. 10 December, 09:20
    0
    Step-by-step explanation:

    (-15x2 - 5x + 11) + (6x2 + 8x - 21)

    -15x2 - 5x + 11 + 6x2 + 8x - 21

    Solving like terms

    -9x2 + 3x - 10

    So option B is the correct answer
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