Question

1.jika 2 log 3=a dan 3 log 5=b.maka 15 log 20
2.jika 2log3=x dan 2log5=y.maka 4log 45=

tolong dibntu ya bserta caranya

Answer 1

2log3=a 3log5=b 2log5=2log3 x b =ab 15log20 =2log20 2;og15 =2log(5 x 2 x 2) 2log(3 x 3 ) =2log5+2log2+2log2 2log3+2log3 =ab+1+1 a+a =2+ab 2a