Given 3x + 2 · 5x + 2 = 153x-4, find the value of (x-1) 2-3x (X-2) - 4

Given 3x + 2 · 5x + 2 = 153x-4, find the value of (x-1) 2-3x (X-2) - 4

∵ 3x + 2 · 5x + 2 = (15) x + 2 = 153x-4, ∵ x + 2 = 3x-4, the solution is: x = 3, ∵ (x-1) 2-3x (X-2) - 4 = x2-2x + 1-3x2 + 6x-4 = - 2x2 + 4x-3 = - 2 × 9 + 4 × 3-3 = - 9
How to calculate 3x-5 / 2x4 / 3 = 5 / 9
3x-5/2X4/3=5/9
3x-10/3=5/9
3x=5/9+10/3
3x=35/9
x=35/27
3x-5/2X4/3=5/9
3x-10/3=5/9
3x=5/9+10/3
3x=35/9
x=27/35
3x-5/2X4/3=5/9
3x-10/3=5/9
3x=10/3+5/9
3x=35/9
x=35/27
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Primary school sixth grade mathematics problem, 20 people, shake hands, how many times, what is the formula? Thank you
Allow Party A and Party B to calculate twice n (n-1) 380
A-B-A calculation n (n-1) / 2 190
X-2 / x + 3 × x ^ 2-9 / x ^ 2-4x + 4 Calculation
=(X-2) / (x + 3) (x-3) × (x + 2x-3) / (X-2) × (x + 3) / (x + 1) = (X-2) / (x + 3) (x-3) × (x-3) (x + 1) / (X-2) × (x + 3) / (x + 1) = 1 / (X-2) when x = 2010, the original formula = 1 / (2010-2) = 1 / 2008
How many times do you want to shake hands
99*100/2=4950
C100,2
=100*99/2
=4950.
99+98+97+......+3+2+1=99+1+98+2+97+3+...+50=50*99=4950
C100(2)=4950
In fact, it's a permutation and combination problem. How many choices are there to choose two from 100? That is, 100 * 99 / 2 = 4950. The stupid way is to add 1 to 99
How to calculate the equation that 4x minus 3 times 9 equals 29
4x-3×9=29
4x-27=29
4x=56
x=14
4x-3*9=29
4x-27=29
4x=27+29
4x=56
x=56/4
x=14
Here you are
4X－3×9＝29
4X＝29＋27
4X＝56
X＝56÷4
X＝14
4x-3x9
=29x
4x-27=29
4x=56
x=14
(4x-3) x9 = 29 or 4x-3x9 = 29
Is the title like this?
（1）4X - 3* 9= 29
4x-27=29
4x=27+29
4x=56
x=56÷4
x=14
（2）(4x-3)X9=29
36 X - 27= 29
36 X =29+27
36 X = 56
X = 56 ÷ 36
X= 14 / 9
Classmate, please list the formula, otherwise I'm not easy to solve. thank you
You should really study math --
4x-3x9=29
4x-27=29
4x=29+27
4x=56
x=14
4x-3×9=29
4x-27=29
4x=29+27
4x=56
x=56÷4
X = 14 is a very simple equation!
4x-3 * 9 = 29 4x = 29 + 3 * 9 4x = 56 so x = 14
4x-3 times 9 is 29. You don't write it very clearly. There are two possibilities.
The first one is the first one
36x-27=29
36x=56
x=9/14
Second:
4x-27=29
4x=56
x=14
4X-3×9＝29
4x-27＝29
4x-27+27=29+27
4x=56
4x÷4=56÷4
x=14
Every two people shake hands, and the formula of n people shake hands is_______ ?
This is a permutation and combination problem. Any two people in n will shake hands. That is to say, each person in n will shake hands with other N-1 people. But there is a coincidence, so it is n (n-1) / 2
It's half n,
Half (n (n-1))
Half n (n-1)
（n-1）
n（n-1）
4x－3 ×9 = 29
How to solve the equation?
Hurry!
4x－3 ×9 = 29
4x-27=29
4x=29+27
4x=56
x=56÷4
x=14
4x=2 x=1/2
4x=29+27
4x=56
x=56/4
x=14
4x-27=29+4x=27+29
4x=56
x=14
4x－3 ×9 = 29
4x=29+27
4x=56
x=14
4x－3 ×9 = 29
4x=56
x=14
4X=29+27
X=14
How many times should 20 people shake hands?
19+18+...+1=190
1+2+3..+(n-1)=n(n-1)/2
9 times 8 minus 4x is 60
9*8-4x=60
72-4x=60
72-60=4x
4x=12
x=12/4
X=3
3. Answer: x = 3