Giải phương trình:
          $\sqrt[3]{x^3+16x^2+62x-78}=x^2-7x+36-\frac{174}{x+5}$
" liên hợp đại pháp" –  ๖ۣۜJinღ๖ۣۜKaido 30-04-16 10:12 AM
oh men~ " bình phương đại pháp" " lập phương thàn chưởng"~ –  ๖ۣۜJinღ๖ۣۜKaido 30-04-16 07:49 AM
bình phương ko đủ thần thánh :))) –  tran85295 30-04-16 07:24 AM
:v sặc " lập phương thần chưởng...... có chiêu " bình phương thần chưởng" ko ca –  ๖ۣۜJinღ๖ۣۜKaido 29-04-16 11:59 PM
lập phương thần chưởng :)))) –  tran85295 29-04-16 11:46 PM
$DK: x\neq -5$
$\Leftrightarrow (x+5)\sqrt[3]{x^3+16x^2+62x-78}=x^3-2x^2+x+6$
$\Leftrightarrow (x+5)[\sqrt[3]{x^3+16x^2+62x-78}-(2x-1)]=x^3-4x^2-8x+11$
$\Leftrightarrow (x^3-4x^2-8x+11)$ $(........)$ =0
$\Rightarrow x^3-4x^2-8x+11=0\Rightarrow (x-1)(x^2-3x-11)=0$
$\Rightarrow x=1;\frac{3\pm \sqrt{53}}{2}$
hoặc đỏ=0 ( loại)
" liên hợp đại pháp" bách chiến vô song –  ๖ۣۜJinღ๖ۣۜKaido 30-04-16 05:06 PM
:v .............. –  ๖ۣۜJinღ๖ۣۜKaido 30-04-16 04:59 PM
anh jin ? –  Hàn Thiên Dii 30-04-16 10:33 AM
anh cách tạo nhóm thế nào ? –  Hàn Thiên Dii 30-04-16 10:20 AM
sao em.............. –  ๖ۣۜJinღ๖ۣۜKaido 30-04-16 10:17 AM
anh jin ơi –  Hàn Thiên Dii 30-04-16 10:15 AM
"liên hợp đại pháp" ;) –  ๖ۣۜJinღ๖ۣۜKaido 30-04-16 10:09 AM

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