Solve the Quadratic Equation: 4x² - 4x + 1 = 0

Solve the following equation:

4x24x+1=0 4x^2-4x+1=0

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:06 Let's find the value of X.
00:09 We'll start by using the roots formula.
00:34 First, identify the coefficients from the equation.
00:50 Now, substitute the given values and begin solving.
01:14 Calculate the square and the products carefully.
01:34 Remember, the square root of zero is always zero.
01:39 When the root equals zero, it means there's only one solution.
02:01 And that's how we find the answer to this question.

Step-by-step written solution

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1

Understand the problem

Solve the following equation:

4x24x+1=0 4x^2-4x+1=0

2

Step-by-step solution

To solve the equation 4x24x+1=04x^2 - 4x + 1 = 0, we will use the quadratic formula:

x=b±b24ac2a x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

First, we identify a=4a = 4, b=4b = -4, and c=1c = 1.

Calculate the discriminant:

b24ac=(4)24×4×1=1616=0 b^2 - 4ac = (-4)^2 - 4 \times 4 \times 1 = 16 - 16 = 0

Since the discriminant is 0, there is one real repeated root.

Substitute into the quadratic formula:

x=(4)±02×4=48=12 x = \frac{-(-4) \pm \sqrt{0}}{2 \times 4} = \frac{4}{8} = \frac{1}{2}

Therefore, the solution to the equation 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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