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Complete the square for x^(2)+6x+? to form a perfect square trinomial.

Complete the square for x2+6x+? x^{2}+6 x+? to form a perfect square trinomial.

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Full solution

Q. Complete the square for x2+6x+? x^{2}+6 x+? to form a perfect square trinomial.
  1. Add Half Square: We have x2+6xx^2 + 6x. To complete the square, add (6/2)2(6/2)^2.
  2. Calculate Square: Calculate (62)2(\frac{6}{2})^2 which is (3)2(3)^2.
  3. Find Missing Number: (3)2(3)^2 equals 99. So, the missing number is 99.

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