Question

if xsquare + ysquare then prove that 2log(x-y)=logx+logy+2log5​

Answer 1

Answer

x²+y²=25xy

adding 2xy on both sides

x²+y²+2xy=27xy

[x+y]²=27xy

taking log on both sides

log[x+y]²=log27xy

2log[x+y]=log3³+log x+log y

2 log[x+y]=3log3+logx+logy

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