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(x+6)^(2)
Which of the following is equivalent to the given expression?
Choose 1 answer:
(A) 
x^(2)+12 x+12
(B) 
2x^(2)+12 x+12
(c) 
x^(2)+12 x+36
(D) 
2x^(2)+12

(x+6)2 (x+6)^{2} \newlineWhich of the following is equivalent to the given expression?\newlineChoose 11 answer:\newline(A) x2+12x+12 x^{2}+12 x+12 \newline(B) 2x2+12x+12 2 x^{2}+12 x+12 \newline(C) x2+12x+36 x^{2}+12 x+36 \newline(D) 2x2+12 2 x^{2}+12

Full solution

Q. (x+6)2 (x+6)^{2} \newlineWhich of the following is equivalent to the given expression?\newlineChoose 11 answer:\newline(A) x2+12x+12 x^{2}+12 x+12 \newline(B) 2x2+12x+12 2 x^{2}+12 x+12 \newline(C) x2+12x+36 x^{2}+12 x+36 \newline(D) 2x2+12 2 x^{2}+12
  1. Applying the formula: We apply the formula to the given expression:\newline(x+6)2=x2+2x6+62(x+6)^2 = x^2 + 2 \cdot x \cdot 6 + 6^2\newlineNow we calculate each term:\newlinex2x^2 is the square of xx,\newline2x62 \cdot x \cdot 6 is the product of 22, xx, and 66,\newline626^2 is the square of 66.
  2. Calculating each term: Performing the calculations:\newlinex2=x2x^2 = x^2 (no change),\newline2×x×6=12x2 \times x \times 6 = 12x (multiplying 22 by xx and then by 66),\newline62=366^2 = 36 (squaring 66).\newlineSo, (x+6)2=x2+12x+36(x+6)^2 = x^2 + 12x + 36.
  3. Performing the calculations: We compare the result with the given choices:\newline(A) x2+12x+12x^2 + 12x + 12 (incorrect, the constant term should be 3636),\newline(B) 2x2+12x+122x^2 + 12x + 12 (incorrect, the coefficient of x2x^2 should be 11 and the constant term should be 3636),\newline(C) x2+12x+36x^2 + 12x + 36 (correct, matches our expanded expression),\newline(D) 2x2+122x^2 + 12 (incorrect, the coefficient of x2x^2 should be 11 and the constant term is missing).

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