BE=a, EC=1-a, AE=3x, ED=4x
т Пифагора для ABE и DCE
9x^2 =1 +a^2
16x^2 =1 +(1-a)^2
16/9 +16/9 a^2 = 2 -2a +a^2
=> 7a^2 +18a -2 =0
=> a=(√95-9)/7 (a>0) =BE
EC =(16-√95)/7
BE/EC =(√95-9)/(16-√95)
=(√95-9)(16+√95)/(256-95)
=(7√95-49)/161
=(√95-7)/23 =(√p-q)/r
p+q+r =95+7+23 =125
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Verified answer
BE=a, EC=1-a, AE=3x, ED=4x
т Пифагора для ABE и DCE
9x^2 =1 +a^2
16x^2 =1 +(1-a)^2
16/9 +16/9 a^2 = 2 -2a +a^2
=> 7a^2 +18a -2 =0
=> a=(√95-9)/7 (a>0) =BE
EC =(16-√95)/7
BE/EC =(√95-9)/(16-√95)
=(√95-9)(16+√95)/(256-95)
=(7√95-49)/161
=(√95-7)/23 =(√p-q)/r
p+q+r =95+7+23 =125