Maths-
General
Easy

Question

If a to the power of 2 end exponent plus b to the power of 2 end exponent equals z and a b equals y, which of the following is equivalent to 4 z plus 8 y ?

  1. left parenthesis a plus 2 b right parenthesis to the power of 2 end exponent  
  2. left parenthesis 2 a plus 2 b right parenthesis to the power of 2 end exponent  
  3. left parenthesis 4 a plus 4 b right parenthesis to the power of 2 end exponent  
  4. left parenthesis 4 a plus 8 b right parenthesis to the power of 2 end exponent  

The correct answer is: left parenthesis 2 a plus 2 b right parenthesis to the power of 2 end exponent


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