АЕ×ВЕ=СЕ×ДЕ
х×3х=5×15
3х^2=75
х^2=25
х=5
АЕ=5 ВЕ=15 АВ=20
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АЕ×ВЕ=СЕ×ДЕ
х×3х=5×15
3х^2=75
х^2=25
х=5
АЕ=5 ВЕ=15 АВ=20