a fost răspuns

Stiind ca x-1/2=2 , calculati  x patrat + 1/x patrat .

Răspuns :

Miky93ask
x-1/2=2
x-1=2*2
x-1=4
x=4+1
x=5

(x+1/x)²= (x+1)²/x²= (5²+ 2*5*1 + 1²)/5²= (25+10+1)/25= 36/25

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