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awni rageb
by awni rageb , معلم / مدير مدرسة / مشرف تربوي/مشرف تدريب , مديرية جنوب الخليل

 

x^2+x=2x+ .........x^2-x-=0..............(x-5)(x+4)=0.......,..........x=5

x=-4

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