2 की पावर एक्स माइनस वन प्लस 2 की पावर एक्स प्लस वन इज इक्वल टू थ्री ट्वेंटी
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Step-by-step explanation:
2 power x -1 + 2 power x + 1 = 320
2 power x + 4 ( 2 power x) =320 × 2
=> 52 power x = 640
2 power x = 640/5 = 128
=> 2 power 7 = 2 power 7
x = 7
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