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ICSE Class 9 Answered

if (a + 1/a) = 2
 
Solve 
 
(a^8 +1)/a^4
 
 
Asked by Aryan | 05 Sep, 2017, 05:51: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight a plus 1 over straight a equals 2 rightwards double arrow open parentheses straight a plus 1 over straight a close parentheses squared equals 2 squared rightwards double arrow straight a squared plus 2 plus 1 over straight a squared equals 4 rightwards double arrow straight a squared plus 1 over straight a squared equals 2 Now comma space straight a to the power of 4 plus 1 over straight a to the power of 4 equals open parentheses straight a squared plus 1 over straight a squared close parentheses squared minus 2 equals 2 squared minus 2 equals 4 minus 2 equals 2 Please space check space your space question. end style
Answered by Rashmi Khot | 06 Sep, 2017, 10:47: AM

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