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Equivalent Expressions

SAT Math· difficulty 3/5

Which is equivalent to 16−x216 - x^2?

  • A

    (4−x)(4+x)(4 - x)(4 + x)

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  • B

    −(x−4)2-(x - 4)^2

  • C

    (4−x)2(4 - x)^2

  • D

    (x−4)(x+4)(x - 4)(x + 4)

Explanation

Difference of squares: 42−x2=(4−x)(4+x)4^2 - x^2 = (4-x)(4+x).

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