Find the method of moment for beta dist. ( alpha 1, alpha 2) as soon as possible please

show all you work

i want the answer step by step

what i got so far

mu 1= m 1 .............> alpha 1 /(alpha 1+alpha 2) = x bar

mu 2= m 2 .............> [( alpha 1+1) alpha 1] /[(alpha 1+alpha 2 +1) (alpha 1+alpha 2)]= (1/n) *sum[x-x bar]^2

i just need to show how to getalpha 1 andalpha 2

useful link see example 19

http://www.math.uah.edu/stat/point/Moments.html