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25 November, 21:02

What is the simplified form of (x - 2) (2x + 3) ? Use the Distributive Property.

2x2 - x - 6

2x2 - 6

2x2 - 7x - 6

2x2 + x - 6

2. What is the simplified form of (3x + 2) (4x - 3) ? Use a table.

12x2 + 18x + 6

12x2 + x - 6

12x2 + 18x - 6

12x2 - x - 6

3. What is the simplified form of (4p - 2) (p - 4) ?

4p2 + 6p - 16

4p2 - 18p + 8

4p2 - 14p - 6

4p2 - 6p + 16

4. The radius of a cylinder is 3x - 2 cm. The height of the cylinder is x + 3 cm. What is the surface area of the cylinder? Use the formula A = 2r2 + 2rh.

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Answers (1)
  1. 25 November, 21:07
    0
    1) (x - 2) (2x + 3) = 2x²+3x-4x - 6

    the answer is 2x² - x - 6

    2) (3x + 2) (4x - 3) = 12x²-9x + 8x - 6

    the answer is 12x2 - x - 6

    3) (4p - 2) (p - 4) = 4p²-16p-2p+8

    the answer is 4p2 - 18p + 8

    4) since A = 2r2 + 2rh

    so A = 2 (3x - 2) ² + 2 (3x - 2) (x + 3)

    = (3x - 2) (2 (3x - 2) + 2 (x + 3))

    A = (3x - 2) (10x+2)
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