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\(288-\left(88+5^4\right)-\left(4x^4-200\right)=416\)
\(\Leftrightarrow288-88-625-4x^4+200=416\)
\(\Leftrightarrow-4x^4-225=416\)
\(\Leftrightarrow-4x^4=641\)(vô lý)
1.a) 4.(12+88) = 4.100=400
b)72- 6 .[2.8:8 ]=72-6.[16:8]=72-6 .2= 49-12=37 ( tui ko chắc lắm )
2.a) x=26-11=15
b) (4x-15)3=53
4x-15=5
4x= 5+15
4x=20
vậy x = 20
Bài 2:
a: Ta có: x+11=26
nên x=15
b: Ta có: \(\left(4x-15\right)^3=125\)
\(\Leftrightarrow4x-15=5\)
hay x=5
a) x – 32 : 16 = 48 ó x – 2 = 48 ó x = 48 + 2 ó x = 50
b) 88 – 3.(7+x) = 64 ó 3.(7+x) = 88 – 64 ó 7 + x = 24:3 ó x = 8 – 7 ó x = 1
c) (5+4x) : 3 – 121 : 11 = 4 ó (5+4x) : 3 – 11 = 4 ó (5+4x) : 3 = 4 + 11 ó 5+4x = 15.3 ó 4x = 45 – 5 ó 4x = 40 ó x = 10
d) 15 – 2(3x+1) = 11.13 – 130 ó 15 – 2(3x+1) = 143 – 130 ó 15 – 2(3x+1) = 13
ó 2(3x+1) = 15 – 13 ó 3x + 1 = 2:2 ó 3x = 1 – 1 ó 3x = 0 ó x = 0
a: =54x(-100)=-5400
b: \(=18+\left(-200\right):4-8\cdot\left(-32\right)-1\)
=17-50+256
=-33+256
=223
a: =54x(-100)=-5400
b: \(=18+\left(-200\right):4-8\cdot\left(-32\right)-1\)
=17-50+256
=-33+256
=223
a: =>4x-5=0 hoặc 5/4x-2=0
=>x=5/4 hoặc x=2:5/4=2*4/5=8/5
b: =>(1/12+19/6-30,75)*x-8=102
=>-55/2x=110
=>x=-4
1
4!+5!
=1.2.3.4+1.2.3.4.5
=24+120=144
2
2!+x=23+5!
2+x=143
x=143-2
vậy x=141
12x+10x=88
x(12+10)=88
x.22=88
x=88:22
vậy x= 4
4!+5!=1.2.3.4+1.2.3.4.5=24+120=144
2!+x=23+5!
1.2+x=23+1.2.3.4.5
2+x=23+120
2+x=143
x=143-2
x=141
Vậy x=141
12x+10x=88
(12+10)x=88
22x =88
x =88:22
x =4
Vây x=4
1: =>x=-5/3-1/2=-13/6
2: =>x=1/3-3/5=-4/15
4: =>x=-7/9+4/3=-7/9+12/9=5/9
5: =>x=5/6-7/3=5/6-14/6=-9/6=-3/2
6: =>x=9/10+1/5=11/10
7: =>x=3/8-5/12=36/96-40/96=-1/24
8: Đề sai rồi bạn
\(288-\left(88+5^4\right)-\left(4x^4-200\right)=416\)
\(\Leftrightarrow288-88-625-4x^4+200=416\)
\(\Leftrightarrow-4x^4-225=416\)
\(\Leftrightarrow-4x^4=641\)(vô lý)
288 - (88 + 54) - (4x4 - 200) = 416
<=> 288 - 88 - 625 - 4x4 + 200 = 416
<=> 288 - 88 - 625 - 416 + 200 = 4x4
<=> -641 = 4x4
<=> x4 = -160,25
<=> x = \(-\sqrt[4]{160,25}\) = -3,557947288 \(\approx\) -3,56