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4 March, 07:36

Subtract and simplify: (3x^2 + 7) - (x^2 - 6x - 4)

Question 3 options:

2x^2 + 6x + 3

4x^2 - 6x + 3

2x^2 + 6x + 11

4x^2 + 3

+1
Answers (1)
  1. 4 March, 08:29
    0
    Distribute the Negative Sign: = 3 x2 + 7 + - 1 (x2 - 6x - 4) = 3 x2 + 7 + - 1 x2 + - 1 ( - 6x) + (-1) (-4) = 3 x2 + 7 + - x2 + 6x + 4 Combine Like Terms: = 3 x2 + 7 + - x2 + 6x + 4 = (3 x2 + - x2) + (6x) + (7+4)

    Answer is = 2 x2 + 6x + 11
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