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20 May, 10:36

Simplify: (3x2 - 5x + 9) + (7x2 + 8x - 15)

A. 10x2 + 3x - 6

B. 10x2 - 3x - 6

C. 10x2 + 3x + 6

D. 10x2 - 3x + 6

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Answers (1)
  1. 20 May, 13:52
    0
    The correct answer is A. 10x² + 3x - 6

    Step-by-step explanation:

    Let's simplify (3x2 - 5x + 9) + (7x2 + 8x - 15):

    (3x2 - 5x + 9) + (7x2 + 8x - 15)

    3x2 - 5x + 9 + 7x2 + 8x - 15 (Opening the parenthesis)

    3x² + 7x² - 5x + 8x + 9 - 15 (Aligning similar terms)

    10x² + 3x - 6

    The correct simplified form is A. 10x² + 3x - 6
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