Question

[Nguyen Linh Ngoc]

tinh gia tri bieu thuc sau ( voi b la mot so )

a) (b*1-b:1)*(b*32)

b) ( 135+15*4) *(b*15-b*7-b*8)

Answer 1

[Nguyen Van Huong]

a) ( b*1 - b : 1 )*( b*32 )

= ( b - b )*( b*32 )

= 0*( b*32 )

= 0

b) ( 135 + 15*4 )*( b*15 - b*7 - b * 8 )

= ( 135 + 15*4 )*b*( 15 - 7 - 8 )

= ( 135 + 15*4 )*b*0

= ( 135 + 15*4 )*0

= 0