Solving for X in the Equation: x^2 + x + 1/4 = 0

Solve the following equation:

x2+x+14=0 x^2+x+\frac{1}{4}=0

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find X
00:04 Identify the coefficients
00:16 Use the roots formula
00:38 Substitute appropriate values according to the given data and solve
00:57 Calculate the squares and products
01:07 A root of 0 is always equal to 0
01:19 When the root equals 0, there will be only one solution to the equation
01:42 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Solve the following equation:

x2+x+14=0 x^2+x+\frac{1}{4}=0

2

Step-by-step solution

To solve the quadratic equation x2+x+14=0 x^2 + x + \frac{1}{4} = 0 , we will use the method of completing the square:

  • Step 1: Rewrite the equation focusing on forming a perfect square.
  • Step 2: The expression x2+x x^2 + x can be transformed into a perfect square.
  • Step 3: Note that (x+12)2=x2+x+14(x + \frac{1}{2})^2 = x^2 + x + \frac{1}{4}.
  • Step 4: Substitute into the equation: (x+12)2=0 (x + \frac{1}{2})^2 = 0 .
  • Step 5: Solve for x x : If (x+12)2=0(x + \frac{1}{2})^2 = 0, then x+12=0 x + \frac{1}{2} = 0 .
  • Step 6: Simplifying the equation, we find x=12 x = -\frac{1}{2} .

This means the solution to the quadratic equation is x=12 x = -\frac{1}{2} .

Thus, the correct answer is x=12 x = -\frac{1}{2} .

3

Final Answer

x=12 x=-\frac{1}{2}

Practice Quiz

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Solve the following equation:

\( 2x^2-10x-12=0 \)

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