Question

Помогите решить:
(log (√5-1) + log (√5+1)) Log 49
² ² ³
______________________________
log 7
³

Answer 1

log(2)(√5-1)(√5+1)*2log(3)7/log(3)7=2log(2)(5-1)=2log(2)4=2*2=4

Answer 2

    Log2(√5-1)*(√5+1)*log3(49)      log2(√5³-1)log3(49)    
=-----------------------------------------=----------------------------  =log2(4) *log7(49)=2*2=4
    log3(7)                                      log3(7)