=(1.25-1.25)-(6.75-6.75)+11x65+11x3x5

=0-0+11x(65-15)

=11x50

=550

   1.25 - 6.75 + 6.75 + 11 x 65 -1.25+33 x 5

=(1.25-1.25)+(6.75-6.75)+11.65+11.3.5

=0+0+11.65+11.(3.5)

=11.65+11.15

=11.(65+15)

=11.80

=880

6.75*3=20.25

(7.14*3)*3=64.26

(9.26*2)*9=166.68

=3(x^2+4x+2,25)

6.75*4.1+3.25*4.1=(6.75+3.25)*4.1

                          =10*4.1

                          =41

6,75x4,1+3,25x4,1=(6,75+3,25)x4,1

                            =10x4,1

                             41

6,75 x 0,75 x 32

=50,625 x 32

= 162

tích mk nhaaa ! mk nhanh nhất đấy !\(nha!\)

6.75*0.75*32=162

17550 sai thì nói hộ nha

\(6,75\times4,2+4,2\times3,25\)

\(=4,2\times\left(6,75+3,25\right)\)

\(=4,2\times10\)

\(=42\)

6,75 . 4,2 + 4,2 . 3,25

= 4,2( 6,75 + 3,25)
= 4,2 . 10

=42

\(\left(64.27\right)^6.75^{18}=\left(2^6.3^3\right)^6.\left(3.5^2\right)^{18}=2^{36}.3^{36}.5^{36}=\left(2.3.5\right)^{36}=30^{36}\)

\(a.C1:=10\times4.2\)

\(=42\)

\(C2:=6,75\times4.2+3.25\times4.2\)

\(=28.35+13.65\)

\(=42\)

\(b.C1:=5.4\times3.6\)

\(=19.44\)

\(C2:=9.6\times3.6-4.2\times3.6\)

\(=34.56-15.12\)

\(=19.44\)

a ) Cách 1 :

( 6,75 + 3,25 ) . 4,2

= 10 . 4,2 = 42

Cách 2 :

( 6,75 + 3,25 ) . 4,2

= 6,75 . 4,2 + 3,25 . 4,2

= 28,35 + 13,65 = 42

b ) Cách 1 :

( 9,6 - 4,2 ) . 3,6

= 5,4 . 3,6 = 19,44

Cách 2 :

( 9,6 - 4,2 ) . 3,6

= 9,6 . 3,6 - 4,2 . 3, 6

= 34,56 - 15,12 = 19,44