a) 4³.27 - 4³.23

= 4³.(27-23)

= 4³.4

= 4⁴

b) 35.77+23.35+5³.2³

= 35.(77+23) + (5.2)³

= 35.100 + 10³

= 35.10²+ 10².10

= 10².(35+10)

= 100.45

= 4500

c) 3².5 + 2³.10 - 81 : 3

= 9.5 + 8.2.5 - 27

= 5.(9+8.2) - 27

= 5.25 - 27

= 5³ - 27

= 98

d) 151-2⁹¹:2⁸⁸+1³.3

= 151 - 2³+3

= 151 - 8 + 3

= 146

5,555*10¹²

3

2^x+3+3.2^x=88

=>2^x.2^3+3.2^x=88

=>2^x.(8+3)=88

=>2^x.11=88

2^x=8

2^x=2^3

vậy x=3

\(2^{x-2}-3.2^x=-88\)

\(\Rightarrow2^x:2^2-3.2^x=-88\)

\(\Rightarrow2^x.\left(\dfrac{1}{4}-3\right)=-88\)

\(\Rightarrow\)\(2^x.\left(-2\dfrac{3}{4}\right)=-88\)

\(\Rightarrow\)\(2^x=\)32

=> x=5

\(2^{x-2}-3.2^x=-88\)

\(2^x.2^{-2}-3.2x=-88\)

\(2^x.\left(2^{-2}-3\right)\) =-88

\(2^x.\left(\dfrac{1}{4}-3\right)\) =-88

\(2^x.\left(\dfrac{-11}{4}\right)\) =-88

\(2^x\) =\(-88:\left(\dfrac{-11}{4}\right)\)

\(2^x\) =32

\(2^x=2^5\)

\(\Rightarrow\) x=5

\(2^{x-2}-3.2^x=-88\)

\(\Leftrightarrow2^x.\frac{1}{4}-3.2^x=-88\)

\(\Leftrightarrow2^x\left(\frac{1}{4}-3\right)=-88\)

\(\Leftrightarrow2^x.\frac{-11}{4}=-88\)

\(\Leftrightarrow2^x=-88.\frac{-4}{11}\)

\(\Leftrightarrow2^x=-8.\left(-4\right)\)

\(\Leftrightarrow2^x=32=2^5\)

\(\Leftrightarrow x=5\)

Vậy x = 5

\(2^{x-2}-3.2^x=-88\)

\(2^x:2^2-2^x:\frac{1}{3}=-88\)

\(2^x:\left(2^2-\frac{1}{3}\right)=-88\)

\(2^x:\frac{11}{3}=-88\)

\(2^x=-88.\frac{11}{3}\)

\(2^x=\frac{-968}{3}\)

\(2^{x-2}-\)\(3.2^x=-88\)

\(2^x:2^2-2^x.3=-88\)

\(2^x.\frac{1}{4}-\)\(2^x.3=-88\)

\(2^x.\left(\frac{1}{4}-3\right)=-88\)

\(2^x.\frac{-11}{4}=-88\)

\(2^x=-88:\frac{-11}{4}\)

\(2^x=32\)

\(2^x=2^5\)

\(\Rightarrow x=5\)

a)\(2^{x-2}\)-\(3\times2^x\)=(-88)

=>\(2^x\times\frac{1}{2^2}-3\times2^x=\left(-88\right)\)

\(\Rightarrow2^x\times\left(\frac{1}{4}-3\right)=\left(-88\right)\)

\(\Rightarrow2^x\times\left(\frac{-11}{4}\right)=\left(-88\right)\)

\(\Rightarrow2^x=32=2^5\)

\(\Rightarrow x=5\)

a, 146

B, 999

C, 2480

D, 4

Học tốt

a) 151 - 2⁹¹ : 2⁸⁸ + 1² . 3

= 151 - 2³ + 1 . 3

= 151 - 8 + 3

= 143 + 3

= 146

b) 1449 - { [ ( 216 +184 ) : 8 ] . 9 }

= 1449 - { [ 400 : 8 ] . 9 }

= 1449 - { 50 . 9 }
= 1449 - 450

= 999

c) 23 . 75 + 25 . 23 + 180

= 23 . ( 75 + 25 ) + 180

= 23 . 100 + 180

= 2300 + 180

= 2480

d) 80 - ( 4 . 5² - 3 . 2³ )

= 80 - ( 4 . 25 - 3 . 8 )

= 80 - ( 100 - 24 )

= 80 - 76

= 4

151-2⁹¹:2⁸⁸+1²*3=151-2³+1*3=151-8+1*3=146

b, 1449-{[(216+184):8]*9}=1449-{[400:8]*9}=1449-{50*9} = 1449-450=999

c,23*75+25*23+180=25*(75+23)+180=2630

d,80-(4*5²-3*2³)=80-(4*25-3*8)=4