Maths-
SAT
Easy

Question

fraction numerator x space plus space 2 over denominator open parentheses x space plus 2 close parentheses squared end fraction
Which of the following expressions is equivalent to the given expression, where x not equal to -2?

  1. x + 2
  2. fraction numerator 1 over denominator x space plus space 2 end fraction
  3. x2 + 2x + 4
  4. fraction numerator 1 over denominator x squared space plus space 2 x plus space 4 end fraction

The correct answer is: fraction numerator 1 over denominator x space plus space 2 end fraction


    fraction numerator x plus 2 over denominator left parenthesis x plus 2 right parenthesis squared end fraction equals fraction numerator left parenthesis x plus 2 right parenthesis over denominator left parenthesis x plus 2 right parenthesis left parenthesis x plus 2 right parenthesis end fraction equals fraction numerator 1 over denominator x plus 2 end fraction

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