If 5a+1/7a=6,then find the value of 25a²+1/49a²
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answer
36
Step-by-step explanation:
5a+1/7a=6
25a^2+1/49a^2
=(5a)^2+(1/7a)^2
=(5a+1/7a)^2
=(6)^2
=36
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