1. \( \left(2\right. \) балла) \( 2^{2-\mathrm{x}}=32 \) 2. \( \left(2\right. \) балла) \( 81^{\mathrm{x}-4}=\frac{1}{3} \) 3. \( \left(2\right. \) балла) \( \left(\frac{1}{4}\right) 4 \mathrm{x}-13=\frac{1}{64} \) 4. \( \left(3\right. \) балла) \( 5^{\mathrm{x}+2}-5^{\mathrm{x}}=120 \) 5. (3 балла \( \left(4^{\mathrm{x}}-6 \cdot 2^{\mathrm{x}}+8=0\right. \) 6. (3 балла) \( 9^{\mathrm{x}}+3 \cdot 3^{\mathrm{x}}-18=0 \)
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Bonus Knowledge
To solve these equations, it's often handy to express them with the same base since most of them involve powers. For instance, \( 32 \) can be rewritten as \( 2^5 \) in the first equation. This creates a basis to equate the exponents directly, making it a breeze to find \( x \). Similarly, \( 81 \) is \( 3^4 \) and \( \frac{1}{3} \) is \( 3^{-1} \), so manipulating these ensures clarity in isolating \( x \). As you tackle these problems, common mistakes can often occur through miscalculations when converting bases or exponents. Always double-check that any logarithmic manipulations maintain the integrity of equations. Don't forget to look out for extraneous solutions, especially in cases where squaring or re-expressing introduces possible false positives. And remember, patience is key—math is as much an art as it is a skill!