Question

logarithm
log 2= x, log 3=y and log 7=z
10g 200

Answer 1

㏒ 200= ㏒8 + ㏒25

㏒ 200= ㏒$2^{3}$  +  ㏒ $5^{2}$

㏒ 200 =  3㏒2 + 2 ㏒ 5

㏒ 200 = 3㏒2 + 2(1 - ㏒2)

㏒ 200 = 3㏒2 - 2㏒2 + 2

㏒200  = ㏒2 + 2

㏒200  = $x+2$

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