نا عبـــــــــقري رياضيات :
الحلــــــــــــــ ::::
أ) جذران حقيقيان متساويان :
B2 – 4ac
144 – 4 × 3 × c = 0
144 – 12c =0
144 = 12c
12 = c
ب) جذران حقيقيان مختلفان
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image002.gif[/IMG]
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image003.gif[/IMG]
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image004.gif[/IMG] 0
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image005.gif[/IMG][IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image006.gif[/IMG]144 – 12c 0
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image007.gif[/IMG][IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image008.gif[/IMG]144 12c
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image009.gif[/IMG]
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image010.gif[/IMG][IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image011.gif[/IMG][IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image012.gif[/IMG] 0
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image013.gif[/IMG][IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image014.gif[/IMG][IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image015.gif[/IMG]144 – 12 c 0
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image016.gif[/IMG]144 12c
[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image017.gif[/IMG][IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image018.gif[/IMG]C 12
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