Solve for x: 24x^2 + 3x = 8x + 169x^2 - 4

Understand the Problem
The question is asking to solve the equation for $x$. We need to rearrange the equation and solve it.
Answer
$x = \frac{-5 \pm \sqrt{2345}}{290}$
Answer for screen readers
$x = \frac{-5 + \sqrt{2345}}{290}$, $x = \frac{-5 - \sqrt{2345}}{290}$
Steps to Solve
- Rewrite the equation
Start with the given equation: $$24x^2 + 3x = 8x + 169x^2 - 4$$
- Move all terms to one side
Subtract $8x$ and $169x^2$ from both sides and add $4$ to both sides to set the equation to zero: $$24x^2 + 3x - 8x - 169x^2 + 4 = 0$$
- Combine like terms
Combine the $x^2$ terms and the $x$ terms: $$(24x^2 - 169x^2) + (3x - 8x) + 4 = 0$$ $$-145x^2 - 5x + 4 = 0$$
- Multiply by -1
Multiply the equation by $-1$ to make the leading coefficient positive: $$145x^2 + 5x - 4 = 0$$
- Use the quadratic formula
The quadratic formula is given by: $$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$ In this case, $a = 145$, $b = 5$, and $c = -4$.
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Plug the values into the quadratic formula $$x = \frac{-5 \pm \sqrt{5^2 - 4(145)(-4)}}{2(145)}$$ $$x = \frac{-5 \pm \sqrt{25 + 2320}}{290}$$ $$x = \frac{-5 \pm \sqrt{2345}}{290}$$
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Simplify the square root Since 2345 = 5 * 469 = 5 * 7 * 67, we cannot simplify $\sqrt{2345}$ further.
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Write out the two solutions Thus the two solutions are: $$x = \frac{-5 + \sqrt{2345}}{290} \approx 0.11$$ $$x = \frac{-5 - \sqrt{2345}}{290} \approx -0.14$$
$x = \frac{-5 + \sqrt{2345}}{290}$, $x = \frac{-5 - \sqrt{2345}}{290}$
More Information
The solutions are two irrational numbers.
Tips
A common mistake is making errors when applying the quadratic formula, especially with the signs and the order of operations. Another frequent mistake includes incorrectly combining like terms which results in a wrong quadratic equation.
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