حل المسالة الاولى
(5س-ص)*5 (س+ص)=3
5(5س-ص)*4 × (5 -دص/دس) ×(س+ص) + (1+دص/دس)(5س-ص)*5 =0
(5س-ص)*4 { 5 (5-دص/دس) ×(س+ص)+(1+دص/دس) ×(5س-ص) } =0 ÷ (5س-ص)*4
25س+25ص - 5س × دص/دس - 5ص×دص/دس +5س - ص +5س × دص/دس -ص×دص/دس =0
دص/دس = -6 (5س+4 ص ) ÷ -6ص
= 5س +4ص ÷ص
بالتعويض فى المعادلة دص/دس - 5س/ص =4
الطرف الايمن (5س+4ص)÷ ص - 5س/ص بتوحيد المقام ينتج المطلوب
__________________
Next time you feel like... it's just one of those days...
when you just can't seem to win
If things don't turn out the way you plan,
FIGURE SOMETHING ELSE OUT!
Don't stay down! Try again! 
|