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اكتب معادلة القطع المكافئ الذي يحقق الخصائص المعطاة :  البؤرة ( 4 , 11 ) ،و المنحنى مفتوح إلى اليمين ويمر بالنقطة  : ( 16 , 20 )  
(x7) 2 =4(y2) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaiikaiaacI hacqGHsislcaaI3aGaaiykamaaCaaaleqabaGaaGOmaaaakiabg2da 9iaaisdacaGGOaGaaiyEaiabgkHiTiaaikdacaGGPaaaaa@40AF@        
(y4) 2 =8(x8) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaiikaiaacM hacqGHsislcaaI0aGaaiykamaaCaaaleqabaGaaGOmaaaakiabg2da 9iaaiIdacaGGOaGaaiiEaiabgkHiTiaaiIdacaGGPaaaaa@40B6@        
(y4) 2 =12(x8) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaiikaiaacM hacqGHsislcaaI0aGaaiykamaaCaaaleqabaGaaGOmaaaakiabg2da 9iaaigdacaaIYaGaaiikaiaacIhacqGHsislcaaI4aGaaiykaaaa@416B@        
(x1) 2 =16(y5) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaiikaiaacI hacqGHsislcaaIXaGaaiykamaaCaaaleqabaGaaGOmaaaakiabg2da 9iaaigdacaaI2aGaaiikaiaacMhacqGHsislcaaI1aGaaiykaaaa@4169@        
(x1) 2 =20(y5) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaiikaiaacI hacqGHsislcaaIXaGaaiykamaaCaaaleqabaGaaGOmaaaakiabg2da 9iaaikdacaaIWaGaaiikaiaacMhacqGHsislcaaI1aGaaiykaaaa@4164@        
            
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