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If (2^{x+1}+2^{x}=48), what is the value of (x)?यदि (2^{x+1}+2^{x}=48), तो (x) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (4)(4)
Here (2^{x+1}+2^{x}=2\cdot2^{x}+2^{x}=3\cdot2^{x}=48), so (2^{x}=16=2^{4}). In exams, factor the common power (2^{x}).(2^{x+1}+2^{x}=2\cdot2^{x}+2^{x}=3\cdot2^{x}=48), इसलिए (2^{x}=16=2^{4})। परीक्षा में सामान्य घात (2^{x}) बाहर लें।
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