34.66 - 34.4 - 66.34 - 66.4

= ( 34.66 - 66.34) - ( 34.4 +66.4)

= 0 - 4.(34+66)

= -4.100 

= -400

\(34.\left(66-4\right)-66.\left(34+4\right)\\ =34.66-34.4-66.34-66.4\\ =\left(34-34-4\right).66-34.4\\ =-4.66-34.4\\ =4.\left(-66\right)-34.4\\ =4.\left(-66-34\right)\\ =4.\left(-100\right)\\=-400\\ -264.\left(-400\right).264.40\\ =264.400.264.40\\ =264.4.100.264.4.10\\ =264.4.264.4.\left(100.10\right)\\ =\left(264.4\right)^2.1000\\ =1115136.1000=1115136000\)

ngu

\(66+66+66+66+6+6+6+6+6+5\)

\(=66.4+6.5+5\)

\(=264+30+5\)

\(=294+5\)

\(=299\)

\(the\)

66+66+66+66+6+6+6+6+6+5=299

bằng 299

nha bn k mk nha bn

thanks chúc bn học tốt

34 . ( 66 - 5 ) - 66 . ( 34 + 5 )

= 34 . 61 - 66 . 39

= 2074 - 2574

= - 500

a. 980 - 34 = 946

b. 567 - 21 = 546

c. 546 - 90 = 456

d. 1094 + 12573 = 13667

e. 558 + 96 = 654

a. 946

b. 546

c. 456

d. 13667

e. 654

Ai k mk , mk k lai

a, 946

a, 546

c,456

d, 13667

e, 654

cho mk hỏi làm s để k bạn 

Ta có 34.(66 - 5) - 66.(34 + 5)

= 34.66 - 34.5 - 66.34 - 66.5

= -5.(34 + 66)

= - 5.100 = - 500

34(66-5)-66(34+5)=34.66-34.5-34.66-66.5=(34.66-34.66)-5(34+66)=-500

=34x66-34x5 -66x34-66x5

=-34x5-66x5

=5x(-34-66)=5x(-100)=-500

34.(66-5)-66.(34+5)=(34-34).(66-66).(5+5)=0.0.10=0

       \(34.\left(66-5\right)-66.\left(34+5\right)\)

\(=34.66-34.5-66.34-66.5\)

\(=\left(34.66-66.34\right)-\left(34.5+66.5\right)\)

\(=0-\left(34+66\right).5\)

\(=0-100.5\)

\(=0-500\)

\(=-500\)

tớ bt thừa là cậu bt đáp án mak sao còn phải giả nai zậy!?  trẻ con còn đg lm đc ns j là cậu !đúng hông nào????????

x+34=66

     x=66-34

     x=32

x+34=66

x=66-34

x=32

vậy x =32

\(\dfrac{3^4.4-6^6}{\text{​3^5.5+10. 3^4}}\)

=\(\dfrac{3^4.2^2-\left(3.2\right)^6}{3^5.5+2.5.3^4}\)

=\(\dfrac{3^4.2^2-3^6.2^6}{3^4.5.\left(3+2\right)}\)

=\(\dfrac{3^4.2^2.\left(1-3^2.2^2\right)}{3^4.5^2}\)

=\(\dfrac{3^4.2^2.\left(-35\right)}{3^4.5^2}\)

=\(\dfrac{2^2.\left(-7\right).5}{5^2}\)

=\(\dfrac{2^2.\left(-7\right)}{5}\)=\(\dfrac{-28}{5}\)