2log5 x=log5 6.4+log5 10

Question

2log5 x=log5 6.4+log5 10

Answer 1

2log(5) x=log(5) 6,4 +log(5) 10;    x>0!!!
log(5) x^2=log(5) (6,4*10)
x^2=64; x=-8 ili x=8
Ответ. 8