Simplify (3x²_ 27)

Mathematics

ScanSolve AI Answer

Answer

3(x - 3)(x + 3)

Step-by-step solution

4 steps

Okay, slim, let's simplify this expression.

  1. Identify the greatest common factor (GCF) in the expression.

    The terms are 3x23x^2 and 27. The GCF of 3 and 27 is 3.

  2. Factor out the GCF from the expression.

    3x2−27=3(x2−9)3x^2 - 27 = 3(x^2 - 9)
  3. Recognize the expression inside the parentheses as a difference of squares.

    The difference of squares formula is a2−b2=(a−b)(a+b)a^2 - b^2 = (a - b)(a + b).
    Here, x2x^2 is a2a^2, so a=xa=x.
    And 9 is b2b^2, so b=3b=3.

  4. Apply the difference of squares formula.

    3(x2−32)=3(x−3)(x+3)3(x^2 - 3^2) = 3(x - 3)(x + 3)

    The simplified form is 3(x−3)(x+3)3(x - 3)(x + 3).

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