Welcome to SciMarvels! In this video, we tackle a challenging math Olympiad problem involving the simplification of exponential equations to find the value of x. Watch as we solve the problem step-by-step on paper, providing a clear and detailed explanation without any voiceover. This unique approach allows you to focus entirely on the math and understand the process visually.
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✅ Key Concepts Covered
• Exponential Equations
• Algebraic Manipulations
• Problem-Solving Strategies
• Mathematical Simplification
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✅ Detailed Steps
We begin with the problem: If (9^9 * 9^9 * 9^9) / (9^9 + 9^9 + 9^9) = 9^x, find xxx.
1.Simplify the numerator and the denominator:
o Numerator: 9^9 * 9^9 * 9^9 = (9^9)^3 = 9^(9*3) = 9^27
o Denominator: 9^9 + 9^9 + 9^9 = 3 * 9^9
2.Rewrite the equation:
o (9^27) / (3 * 9^9) = 9^x
3.Simplify the denominator further:
o (9^27) / (3 * 9^9)
4.Express in terms of a common base:
o 9 = 3^2
o Rewrite 9^27 as (3^2)^27 = 3^54
o Rewrite 9^9 as (3^2)^9 = 3^18
5.Substitute the expressions:
o (3^54) / (3 * 3^18)
6.Combine the terms:
o 3^(54 - 18 - 1)
o 3^35
7.Rewrite the simplified expression:
o 3^35 = 3^(2x)
8.Equate the exponents:
o 35 = 2x
9.Solve for x:
o x = 35 / 2
o x = 17.5
Therefore, the value of x is: x = 17.5
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✅ Learning Outcomes
By the end of this video, you will:
• Understand how to manipulate and simplify exponential equations.
• Gain skills in algebraic manipulation and problem-solving strategies.
• Enhance your mathematical simplification techniques for advanced problems.
• Develop a deeper understanding of how to approach and solve complex math problems.
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• Unleashing the Power o...
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✅ Why Subscribe to SciMarvels?
At SciMarvels, we are dedicated to making complex math and physics problems accessible and enjoyable. Our unique approach of solving problems without voiceovers allows you to concentrate solely on the math, fostering a deeper understanding. Subscribe to join a community of learners who are passionate about mastering scientific concepts through clear, step-by-step solutions.
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✅ Tags
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