The problem asks us to find the solution set of the quadratic equation $2x^2 - 7x + 1 = 0$ using the quadratic formula.

AlgebraQuadratic EquationsQuadratic FormulaSolution Sets
2025/5/31

1. Problem Description

The problem asks us to find the solution set of the quadratic equation 2x27x+1=02x^2 - 7x + 1 = 0 using the quadratic formula.

2. Solution Steps

The quadratic formula is given by
x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
for the quadratic equation ax2+bx+c=0ax^2 + bx + c = 0.
In the given equation 2x27x+1=02x^2 - 7x + 1 = 0, we have a=2a = 2, b=7b = -7, and c=1c = 1.
Substituting these values into the quadratic formula, we get
x=(7)±(7)24(2)(1)2(2)x = \frac{-(-7) \pm \sqrt{(-7)^2 - 4(2)(1)}}{2(2)}
x=7±4984x = \frac{7 \pm \sqrt{49 - 8}}{4}
x=7±414x = \frac{7 \pm \sqrt{41}}{4}
Thus, the two solutions are x1=7+414x_1 = \frac{7 + \sqrt{41}}{4} and x2=7414x_2 = \frac{7 - \sqrt{41}}{4}.

3. Final Answer

The solution set is {7+414,7414}\{\frac{7 + \sqrt{41}}{4}, \frac{7 - \sqrt{41}}{4}\}.

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