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Equivalent Expressions

SAT Math· difficulty 2/5

Which expression is equivalent to (x+4)2(x + 4)^2?

  • A

    x2+16x^2 + 16

  • B

    x2+8x+16x^2 + 8x + 16

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  • C

    x2+8x+8x^2 + 8x + 8

  • D

    x2+4x+16x^2 + 4x + 16

Explanation

(x+4)2=x2+2(4)x+16=x2+8x+16(x + 4)^2 = x^2 + 2(4)x + 16 = x^2 + 8x + 16.

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