Johnson Owen
08/23/2023 · Junior High School
Question 5 Solve for the roots in simplest form using the quadratic formula: \[ x^{2}+97=20 x \] Answer คAdditional Solution \( \Theta \) No Solution
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Step-by-step Solution
Solve the equation \( x^{2}+97=20x \).
Solve the quadratic equation by following steps:
- step0: Solve using the quadratic formula:
\(x^{2}+97=20x\)
- step1: Move the expression to the left side:
\(x^{2}+97-20x=0\)
- step2: Rewrite in standard form:
\(x^{2}-20x+97=0\)
- step3: Solve using the quadratic formula:
\(x=\frac{20\pm \sqrt{\left(-20\right)^{2}-4\times 97}}{2}\)
- step4: Simplify the expression:
\(x=\frac{20\pm \sqrt{12}}{2}\)
- step5: Simplify the expression:
\(x=\frac{20\pm 2\sqrt{3}}{2}\)
- step6: Separate into possible cases:
\(\begin{align}&x=\frac{20+2\sqrt{3}}{2}\\&x=\frac{20-2\sqrt{3}}{2}\end{align}\)
- step7: Simplify the expression:
\(\begin{align}&x=10+\sqrt{3}\\&x=\frac{20-2\sqrt{3}}{2}\end{align}\)
- step8: Simplify the expression:
\(\begin{align}&x=10+\sqrt{3}\\&x=10-\sqrt{3}\end{align}\)
- step9: Rewrite:
\(x_{1}=10-\sqrt{3},x_{2}=10+\sqrt{3}\)
The roots of the equation \(x^{2}+97=20x\) using the quadratic formula are \(x_{1}=10-\sqrt{3}\) and \(x_{2}=10+\sqrt{3}\).
Quick Answer
The roots are \(x_{1}=10-\sqrt{3}\) and \(x_{2}=10+\sqrt{3}\).
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