Question
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7. \( 2^{x^{2}-3} \cdot 5^{x^{2}-3}=0,01\left(10^{x-1}\right) \)

Ask by Lane Zimmerman. in Uzbekistan
Jan 24,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

Tenglamaning yechimlari: \( x = 0 \) yoki \( x = 1 \).

Solution

Berilgan tenglamani yechamiz: \[ 2^{x^{2}-3} \cdot 5^{x^{2}-3} = 0{,}01 \cdot 10^{x-1} \] 1. Chap tomonni soddalashtiramiz: \[ 2^{x^{2}-3} \cdot 5^{x^{2}-3} = (2 \cdot 5)^{x^{2}-3} = 10^{x^{2}-3} \] 2. O'ng tomonni yozamiz: \[ 0{,}01 = 10^{-2} \] Shunday qilib: \[ 0{,}01 \cdot 10^{x-1} = 10^{-2} \cdot 10^{x-1} = 10^{x-3} \] 3. Tenglamamiz quyidagicha ko'rinadi: \[ 10^{x^{2}-3} = 10^{x-3} \] 4. Asoslar teng bo'lgani uchun eksponentlar teng bo'lishi kerak: \[ x^{2} - 3 = x - 3 \] 5. Tenglamani yechamiz: \[ x^{2} - x = 0 \] \[ x(x - 1) = 0 \] 6. Nolga teng bo'lish shartlarini topamiz: \[ x = 0 \quad \text{yoki} \quad x = 1 \] Shunday qilib, tenglamaning yechimlari: \[ x = 0 \quad \text{yoki} \quad x = 1 \]

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The Deep Dive

To solve the equation \( 2^{x^{2}-3} \cdot 5^{x^{2}-3}=0,01\left(10^{x-1}\right) \), we can simplify the right side first. We know that \( 0.01 = 10^{-2} \). Thus, we can rewrite the equation as: \[ 2^{x^{2}-3} \cdot 5^{x^{2}-3} = 10^{-2} \cdot 10^{x-1} \] This simplifies to: \[ 2^{x^{2}-3} \cdot 5^{x^{2}-3} = 10^{x-3} \] Since \( 10 = 2 \cdot 5 \), we can express \( 10^{x-3} \) in terms of its prime factors: \[ 10^{x-3} = (2 \cdot 5)^{x-3} = 2^{x-3} \cdot 5^{x-3} \] Now, equating the powers of 2 and 5 on both sides, we have: 1. For the base 2: \[ x^{2}-3 = x-3 \] 2. For the base 5: \[ x^{2}-3 = x-3 \] Both equations are identical, so we focus on solving one of them: \[ x^{2} - x = 0 \] Factoring gives us: \[ x(x-1) = 0 \] This leads to two solutions: \[ x = 0 \quad \text{or} \quad x = 1 \] Thus, the solutions to the original equation are \( x = 0 \) and \( x = 1 \).

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