3.5^2 - 4.2^3 = ?
Những câu hỏi liên quan
75-(3.52-4.23)
75 - (3 . 52 - 4 . 23)
= 75 - (3 . 25 - 4 . 8)
= 75 - (75 - 32)
= 75 - 75 + 32
= 0 + 32 = 32
Thực hiện phép tính
A, 3.5²-4.2³ B, 3.5²+3÷5⁰-48÷2³ C, 120+40÷4-3.5² D, 5.2³-36÷3²
Giúp mình với vì tối nay mình đi học rồi
\(A=3\cdot5^2-4\cdot2^3\\ =3\cdot25-4\cdot8\\ =75-32\\ =43\\ B=3\cdot5^2+3:5^0-48:2^3\\ =3\cdot25+3-48:8\\ =75+3-6\\ =72\\ C=120+40:4-3\cdot5^2\\ =120+10-75\\ =55\\ D=5\cdot2^3-36:3^2\\ =5\cdot8-36:9\\ =40-4\\ =36\)
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Viết các công thức trong excel 1)4.2^3-36:9 2)52.63+52.18-19.52 3)5^3.5^2[42-(15-5)^2 4)1/2.1/3+1/4:1/5+(1/2)^3
\(\text{1)}4.2^3-36:9\Rightarrow\text{4*2^3-36/9}\)
\(\text{2)}52.63+52.18-19.52\Rightarrow\text{52*63+52*18-19*52}\)
\(\text{3)}5^3.5^2.\left[42-\left(15-5\right)^2\right]\Rightarrow\text{5^3*5^2*(42-(15-5)^2}\left(\text{do trong excel không dùng dấu [ ]}\right)\)
\(\text{4)}\frac{1}{2}.\frac{1}{3}+\frac{1}{4}:\frac{1}{5}+\left(\frac{1}{2}\right)^3\Rightarrow\text{1/2*1/3+(1/4)/(1/5)+(1/2)^3}\)
Đề: tính giá trị của biểu thức có thể tính nhanh
A.400+{106-[2^3+(4.2^3-6.5)]}
B.800:{111-[3^2+(2^3.5-19.2]}
A) 400 + { 106 - [ 23 + ( 4.23 - 6.5 )]}
= 400 + { 106 - [ 8 + ( 4.8 - 30 )]}
= 400 + { 106 - [ 8 + ( 32 - 30 )]}
= 400 + { 106 - [ 8 + 2 ]}
= 400 + { 106 - 10 }
= 400 + 96
= 496
B) 800 : { 111 - [ 32 + ( 23 .5 - 19.2 )]}
= 800 : { 111 - [ 9 + ( 8.5 - 38 )]}
= 800 : { 111 - [ 9 + ( 40 - 38 )]}
= 800 : { 111 - [ 9 + 2 ]
= 800 : { 111 - 11 }
= 800 : 100
= 8
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\(A,400+\left\{106-\left\{2^3+\left(4.2^3-6.5\right)\right\}\right\}\)
\(A,=400+\left\{106-\left\{8+\left(4.8-6.5\right)\right\}\right\}\)
\(A,=400+\left\{106-\left\{8+\left(32-30\right)\right\}\right\}\)
\(A,=400+\left\{106-\left(8+2\right)\right\}\)
\(A,=400+\left(106-10\right)\)
\(A,=400+96\)
\(A,=496\)
\(B,800:\left\{111-\left\{3^2+\left(2^3.5-19.2.\right)\right\}\right\}\)
\(B,=800:\left\{111-\left\{9+\left(8.5-19.2\right)\right\}\right\}\)
\(B,=800:\left\{111-\left\{9+\left(40-38\right)\right\}\right\}\)
\(B,=800:\left\{111-\left(9+2\right)\right\}\)
\(B,=800:\left(111-11\right)\)
\(B,=800:100\)
\(B,=8\)
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a,75-(3.52 -4.22)
b,465+[(-38)+(-465)]-[12-(-42)
lim 4.2^n+1-10^n+2/3.5^n-10^n
Mn giúp mình với ạ! Mình cảm ơn nhiều ạ.
`lim [4.2^[n+1]-10^[n+2]]/[3.5^n-10^n]`
`=lim [2.(1/5)^[n+2]-1]/[3/25(1/2)^[n+1]-1/100]`
`=[-1]/[-1/100]=100`
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a) 6.3+(-3.7)+2.4+(-0.3)
b)(-4.9)+5.5+4.9+(-5.5)
c)2.9 +3.7+(-4.2)+(-2.9)+4.2
d)(-6.5).2.8+2.8.(-3.5)
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a) 6.3+(-3.7)+2.4+(-0.3)
b)(-4.9)+5.5+4.9+(-5.5)
c)2.9 +3.7+(-4.2)+(-2.9)+4.2
d)(-6.5).2.8+2.8.(-3.5)
a) 6,3 + (-3,7) + 2,4 + (-0,3)
= (6,3 + 2,4) + [-3,7 + (-0,3)]
= 8,7 + (-4)
= 4,7
b) (-4,9) + 5,5 + 4,9 + (-5,5)
= (-4,9 + 4,9) + [5,5 + (-5,5)]
= 0 + 0
= 0
c) 2,9 + 3,7 + (-4,2) + (-2,9) + 4,2
= [2,9 + (-2,9)] + (-4,2 + 4,2) + 3,7
= 0 + 0 + 3,7
= 3,7
d) (-6,5) . 2,8 + 2,8 . (-3,5)
= 2,8 . [-6,5 + (-3,5)]
= 2,8 . (-10)
= -28.
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Thực hiện phép tính
1, A, 2².3-4. B,16-2³.2. C, 4²-4.2. D, 3³-2.3²
2, a, 5.4²-18÷3. B, 17.85+15.17-3³.3.5. C, 5³.17-5³.14. D, 30- (5-1)²
Giúp mình với vì tối nay mình đi học rồi
bài này dễ mà bạn bạn chỉ cần đổi ra rồi tính bình thường là đc mà
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Bài 1:
\(A=2^2\cdot3-4\\ =4\cdot3-4\\ =4\cdot\left(3-1\right)\\ =4\cdot2\\ =8\\ B=16-2^3\cdot2\\ =16-16\\ =0\\ C=4^2-4\cdot2\\ =4\cdot\left(4-2\right)\\ =4\cdot2\\ =8\\ D=3^3-3\cdot3^2\\ =3^3-3^3\\ =0\)
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1 A
2^2.3-4
=4.3-4
=12-4
=8
B16-2^3.2
=16-8.2
=16-16
=0
C4^2-4.2
=16-4.2
=16-8
=8
D3^3-2.3^2
=27-2.9
=27-18
=9
2:A,5.4^2-18:3
=5.16-18:3
=80-6
=74
B
=17.85+15.17-9.3.5
=1445+255-135
=1565
C
=125.17-125.14
=125.(17-14)
=125.3
=375
D
=30-16
=14
het
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