78.(-99)+ 99 .(-22)

= -99 .[ 78 + (-22) ]

= -99 .56

= -99 .56

= -5544

Trả lời :

78 . ( - 99 ) + 99 . ( - 22 )

= 78 . ( - 99 ) + ( - 99 ) . 22

= - 99 . ( 78 + 22 )

= - 99 . 100

= - 9900

Hok tốt

78. ( -99 ) + 99. ( -22 )

= ( -78 ). 99 + 99. ( -22 )

= 99. [ ( -78 ) + ( -22 ) ]

= 99. ( -100 ) = -9900

3+99+22+33+77+22x69x25-38-95=38051

k nha

441467 nha

cho minh

38051 nhé bạn

\(51^{51}=\overline{.....1}\)

\(99^{99}=\left(99^2\right)^{49}\cdot9=\overline{....1}^{49}\cdot9=\overline{....1}\cdot9=\overline{....9}\)

\(22^{22}=\left(22^4\right)^5\cdot2^2=\overline{...6}^5\cdot4=\overline{...6}\cdot4=\overline{....4}\)

\(222^{101}=\left(222^4\right)^2^5\cdot222=\overline{...6}^{25}\cdot222=\overline{....6}\cdot222=\overline{....2}\)

Quy luật:

00*00=0*0*0*0=0

11*11=1*1*1*1=1

22*22=2*2*2*2=16

33*33=3*3*3*3=81

44*44=4*4*4*4=256

=> 99*99=9*9*9*9=6561

Bạn Ngô Văn Phương đã trả lời đúng!

bằng 6561

11+22=33

22+33=55

33+44=77

44+55=99

55+66=121

66+77=143

77+88=165

88+99=187

99+100=199

11+22=33

22+33=55

33+44=77

44+55=99

55+66=121

66+77=143

77+88=165

88+99=187

99+100=199

chúc bn hok tốt

tk+kb vs mk nha m.n!
c.ơn m.n nhìu!

11 + 22 = 33

22 + 33 = 55

33 + 44 = 77

44 + 55 = 99

55 + 66 = 121

66 + 77 = 143

77 + 88 = 165

88 + 99 = 187

99 + 100 = 199

 HỌC TỐT

4740

4740

22+99

=121

tk mk nha

22 + 99 = 121

22+99=121

22+99=121 nha bn

22+99=110

22+99=121

\(y\times1+y\times2+y\times27-\left(99-22\right)=277\)

\(y\times\left(1+2+27\right)-77=277\)

\(y\times30-77=277\)

\(y\times30=277+77\)

\(y\times30=354\)

\(y=\dfrac{354}{30}\)

\(y=\dfrac{59}{5}\)