幫幫=-=
solve the follwing quadratic equations using the
quadratic formula.(leave your answers in sued form if necessary)
1:7x-6+5x(2次)=0
solve the follwing quadratic equations using the
quadratic formula.(give your answers correct to 2 decimal places)
2:-17x(2次)-23x+5=0
solve the follwing quadratic equations using the
quadratic formula.(leave your answers in surd form)
5 1
3:x(2次)- -x- -=0
4 2
幫幫手 要祥解
-=分數線
-=減
個2次唔識打 所以打2次 |