Question

If x2+y2=25xy,then prove that2log(x+y)=3log3+logx+logy

Answer 1

x²+y²=25xy
=>x²+2xy+y²=25xy+2xy
=>(x+y)²=27xy
Taking log on both sides
log(x+y)²=log27xy
=>2log(x+y)=log27+logx+logy
=>2log(x+y)=3log3+logx+logy

Hope this may help you. Thank You

Answer 2

answer of your question is in the above picture.