Question

bài 1 a) tìm x,a,y

x+x+x+x+x=10             a+a=10

y-190=1000-999          1232-x=187

b) độ dài các cạnh của tứ giác ABCDE lần lượt là:185cm,590cm,900cm,12cm

bài 2 tính:

12+3:5=?      123:0+3=?

90-16:0=?     15:3+7=?

Answer 1

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

Answer 2

oooooooooooooooooooooooooooooooooooooooooooooooooooo ô

Answer 3

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

Answer 4

2,5,191,1045 em nhé

Answer 5

\(\hept{\begin{cases}r4444444444444444444444444444444444444\\ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt\end{cases}}\)

Answer 6

TCGHB NBGT5555555555555555555555555555555555I7ERGVUTDYCKGTF7DO5TK

Answer 7

1.

a) x+x+x+x+x=10            

        x= 10 : 5 

       x=2

Answer 8

a+a=10

   a= 10:2

   a=5

Answer 9

lên ủng hộ vũ ngọc tuấn

Answer 10

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)