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01/08/2024 · Primary School
Determine the natura of the roots of the equation (2) \( x^{2}-3 x-2=0 \)
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Step-by-step Solution
Solve the equation \( x^{2}-3x-2=0 \).
Solve the quadratic equation by following steps:
- step0: Solve using the quadratic formula:
\(x^{2}-3x-2=0\)
- step1: Solve using the quadratic formula:
\(x=\frac{3\pm \sqrt{\left(-3\right)^{2}-4\left(-2\right)}}{2}\)
- step2: Simplify the expression:
\(x=\frac{3\pm \sqrt{17}}{2}\)
- step3: Separate into possible cases:
\(\begin{align}&x=\frac{3+\sqrt{17}}{2}\\&x=\frac{3-\sqrt{17}}{2}\end{align}\)
- step4: Rewrite:
\(x_{1}=\frac{3-\sqrt{17}}{2},x_{2}=\frac{3+\sqrt{17}}{2}\)
The roots of the equation \(x^{2}-3x-2=0\) are \(x_{1}=\frac{3-\sqrt{17}}{2}\) and \(x_{2}=\frac{3+\sqrt{17}}{2}\).
Since the roots are real and distinct, the nature of the roots is real and distinct.
Quick Answer
The roots are real and distinct.
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