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Rewrite the equation by completing the square.

{:[4x^(2)+28 x+49=0],[(x+◻)^(2)=◻]:}

Rewrite the equation by completing the square.\newline4x2+28x+49=04x^{2}+28x+49=0\newline(x+)2=(x+\square)^{2}=\square

Full solution

Q. Rewrite the equation by completing the square.\newline4x2+28x+49=04x^{2}+28x+49=0\newline(x+)2=(x+\square)^{2}=\square
  1. Identify quadratic equation and terms: Identify the given quadratic equation and its terms.\newlineThe given equation is 4x2+28x+49=04x^2 + 28x + 49 = 0. We need to complete the square for this equation.
  2. Factor out coefficient of x^22: Factor out the coefficient of x2x^2 from the first two terms.\newlineSince the coefficient of x2x^2 is 44, we factor it out from the first two terms to make the x2x^2 term a perfect square.\newline4(x2+7x)+49=04(x^2 + 7x) + 49 = 0
  3. Find value to complete the square: Find the value to complete the square.\newlineTo complete the square, we need to add and subtract the square of half the coefficient of x inside the parentheses. The coefficient of x is 77, so half of 77 is 3.53.5, and the square of 3.53.5 is 12.2512.25.\newline4(x2+7x+12.2512.25)+49=04(x^2 + 7x + 12.25 - 12.25) + 49 = 0
  4. Add and subtract value inside parentheses: Add and subtract the value inside the parentheses and simplify.\newlineWe add and subtract 12.2512.25 inside the parentheses and factor the perfect square trinomial.\newline4((x+3.5)212.25)+49=04((x + 3.5)^2 - 12.25) + 49 = 0
  5. Distribute and combine like terms: Distribute the 44 and combine like terms.\newlineNow we distribute the 44 into the parentheses and combine the constant terms.\newline4(x+3.5)249+49=04(x + 3.5)^2 - 49 + 49 = 0
  6. Simplify the equation: Simplify the equation.\newlineThe 49-49 and +49+49 cancel each other out, leaving us with the completed square form of the equation.\newline4(x+3.5)2=04(x + 3.5)^2 = 0
  7. Write final completed square form: Write the final completed square form.\newlineThe final completed square form of the equation is:\newline(x+3.5)2=0(x + 3.5)^2 = 0

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