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anonymous

  • one year ago

To factor 9x^2-16 you can first rewrite the expression as: A.(3x^2)-(4)^2 B.(3x-4)^2 C.(3x)^2-(4) D. None of the above

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  1. UsukiDoll
    • one year ago
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    we have perfect square numbers 9 and 16 a perfect square is the product of a rational number multiplied by itself. the product of a polynomial multiplied by itself. We have the formula \[(a^2-b^2) = (a+b)(a-b) \]

  2. UsukiDoll
    • one year ago
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    A perfect square is a number that can be expressed as the product of two equal integers.

  3. anonymous
    • one year ago
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    (3x+4)(3x−4)

  4. welshfella
    • one year ago
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    this is called the difference of 2 squares and is described by the identity UsukiDoll posted a^2 - b^2 = (a + b)(a - b)

  5. UsukiDoll
    • one year ago
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    I forgot about typing "difference of 2 squares". thank you for pointing that out @welshfella

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