Question
\( 9 ^ { x } \cdot 9 ^ { 3 } = 9 ^ { 7 } ; x = \)
Ask by Washington Zimmerman. in Mexico
Mar 05,2025
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\( x = 4 \)
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To solve for \( x \) in the equation \( 9^{x} \cdot 9^{3} = 9^{7} \), you can use the property of exponents which states that when you multiply like bases, you add the exponents. Therefore, you can rewrite the left side as: \[ 9^{x + 3} = 9^{7} \] Since the bases are the same, you can set the exponents equal to each other: \[ x + 3 = 7 \] Now, solve for \( x \): \[ x = 7 - 3 \] \[ x = 4 \] So, \( x = 4 \).