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Consider the following for the three (03) items that follow: Let p = 2 - and q = - 2 . What is (p + q) equal to?

Options

  1. A4
  2. B4
  3. C2 4
  4. D2 4

Correct answer

D. 2 4

Step-by-step solution

Given p = 2 - and q = - 2 . Simplifying p : p = 2 2 - = 2 - 2 2 = (2 - ) 2 = 2 Simplifying q : q = - 2 2 = 2 - 2 2 = (2 - ) 2 = 2 = 1 2 Now, adding p and q : p + q = 2 + 1 2 Using 2 = 2 : p + q = 2 + 1 2 p + q = 2 ^2 + 2 2 2 Using the identity 2 = 1 - 2 ^2 in the numerator and 2 = 2 in the denominator: p + q = 2 ^2 + (1 - 2 ^2 ) 2 2 p + q = 1 2 2 Multiplying and dividing by 2 : p + q = 2 2 2 2 = 2 4 p + q = 2 4 Answer: 2 4

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