Question

2x2+2x2x9+9x5=?

​​​​​​​​aiv kb vs mk đi ...

Answer 1

2 x 2 + 2 x 2 x 9 + 9 x 5

= 4 + 36 + 45

= 40 + 45

= 85

Answer 2

    2 x 2 + 2 x 2 x 9 + 9 x 5

= 4 + 4 x 9 + 9 x 5

= 4 x ( 1 + 9 )  + 9 x 5

= 4 x10 + 9 x 5

= 4 x 2 x 5 + 9 x 5

= 6 x 5 + 9 x 5

= 5 x ( 6 + 9 )

= 5 x 15

= 75 

Answer 3

2 x 2 + 2 x 2 x 9 + 9 x 5 = 4 + 36 + 45 = 40 + 45 = 85

Answer 4

\(2\times2+2\times2\times9+9\times5=85\)85

Answer 5

Xin lỗi bằng 85

Answer 6

2 x 2 + 2 x 2 x 9 + 9 x 5 

= 4 + 36 + 45

= ( 36 + 4 ) + 45

= 40 + 45

= 85