Given the square of X + 4x-1 = 0, find the value of the fourth power of 2x + the third power of 8x - the square of 4x - 8x + 1

Given the square of X + 4x-1 = 0, find the value of the fourth power of 2x + the third power of 8x - the square of 4x - 8x + 1

x²+4x=1
So the original formula = 2x & # 178; (X & # 178; + 4x) - 4x & # 178; - 8x + 1
=2x²-4x²-8x+1
=-2x²-8x+1
=-2(x²+4x)+1
=-2+1
=-1

Given the function f (2X-4) = the square of 4x - 2x, find the analytic expression of F (x) and the value of F [f (1)]
It's a process!

Let a = 2X-4
x=(a+4)/2
Then f (a) = 4 (a + 4) &# 178; / 4-2 (a + 4) / 2 = A & # 178; + 7a + 12
So f (x) = x & # 178; + 7x + 12
f(1)=1+7+12=20
So f [f (1)]
=f(20)
=20²+7×20+12
=552

If f (2x + 1) = 4x, then f (5)=
Using the method of substitution to solve the problem

∵f(2x+1)=4x²
Let 2x + 1 = 5  x = 2
∴f(5)=f(2*2+1)=4*2^2=16

8x-24 = 88, how to solve this equation?

8x=88-24
8x=64
x=64/8
x=8

How to solve the equation (8x-90) / (4 / 5x) + 90 / x = 8.5?

5（8x-90)/4+90=8.5x 5（8x-90)+360=34x 6x=90 x=15

How to write the equation 3.4 times 5 + 8x = 41.8

3.4 times 5 + 8x = 41.8
17+8x=41.8
8x=41.8-17
8x=24.8
x=3.1

How to solve the equation 1.8x-2.4 = x

1.8x-2.4=x
1.8x-x=2.4
0.8x=2.4
x=2.4/0.8
x=3

Is equation 5.8x-2 (x + 50) = 14 solvable?

5.8x-2x-100=14
3.8x=14+100=114
x=114/3.8=30

Ask an expert to solve the quartic equation x ^ 4 + 4x ^ 3 + 6x ^ 2-8x-8 = 0

In general, the reduction of degree is considered first in quartic equation
The factors 1,2,4,8, - 1, - 2, - 4, - 8 of 8 are brought into the equation respectively, and they are not 0, so the equation can not be decomposed into the product of integral coefficient equation
Although the quartic equation can be solved by formula, it is very complex. Generally, the approximate solution is obtained by programming in the range of real number
It can be changed into (x ^ 2 + 2x) ^ 2 + 2 (X-2) ^ 2 = 16

How to solve the equation x + 4x + 8x = 26?
Please help me solve it. Thank you very much

x+4x+8x=26
(1+4+8)x=26
13x=26
x=26÷13
x=2