Question

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

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

Answer 1

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

 = ( 135 + 15 * 4) * (b*(15-7-8))

= ( 135 + 15 * 4) * 0

=0

Answer 2

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

= (b * 1 - b * 1/10) * ( b * 32)

= (b*(1-1/10)) * (b*32)

= (b*9/10 ) * (b*32)

=b² * 144/5

Answer 3

Thiên Ngoại Phi Tiên mày làm thế này lớp 3 sao hiểu đc

Answer 4

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

= ( b - b ) * ( b * 32 )

= 0 * ( b * 32 )

= 0

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

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

= ( 135 + 15 * 4 ) * [ b * 15 - b * 15 ]

= ( 135 + 15 * 4 ) * [ 15b - 15b ]

= ( 135 + 15 * 4 ) * 0

= 0

Answer 5

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

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

=0*(b*32)

=0

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

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

=( 135 + 15 * 4)*0

=0

Answer 6

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

=(b-b)*32b

=0*32b

=0

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

=(135+60)*[b*(15-7-8)]

=195*(b*0)

195*0

=0

Answer 7

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

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

=0*(b*32)

=0

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

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

=( 135 + 15 * 4)*0

=0