Mathematics

For x = 9 and y = 4, the value of x2 + 2xy + y2 - 3 is :

  1. 172

  2. 100

  3. 166

  4. 169

Expansions

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Answer

Given,

⇒ x2 + 2xy + y2 - 3

⇒ (x + y)2 - 3

Substituting values we get :

⇒ (9 + 4)2 - 3

⇒ 132 - 3

⇒ 169 - 3

⇒ 166.

Hence, Option 3 is the correct option.

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