2^(4x+1)-17*4^x+8=0

2^(4x+1)-17*4^x+8=0

2^(4x+1)=2*2^4x=2*4^2x=2*(4^x)^2
Let a = 4 ^ X
Then 2A ^ 2-17a + 8 = 0
(2a-1)(a-8)=0
a=1/2,a=8
4^x=1/2,4^x=8
4^x=1/2
2^2x=2^-1
2x=-1
x=-1/2
4^x=8
2^2x=2^3
2x=3,x=3/2
So x = - 1 / 2, x = 3 / 2

(x-4.6) multiply by 2.3 = 9.338

(x-4.6) times 2.3 = 9.338
x-4.6=9.338/2.3
x-4.6=4.06
x=4.6+4.06
x=8.66

In rectangular coordinate system, find the coordinate of the point on the straight line y = 1 / 2x + 1 / 2 whose distance from the Y axis is equal to 1

The distance to the y-axis is equal to 1, which is equivalent to the two straight lines with x = 1 and x = - 1
When y = 1 / 2x + 1 / 2, x = 1, y = 1; when x = - 1, y = 0 point coordinates (1 1); (0 - 1)

Factorization 1: (K + 1) Λ 2 - (K + 1) - 56
Factorization
First: (K + 1) Λ 2 - (K + 1) - 56
Second: 2x Λ 3-128y Λ 3
The first answer is: (k-7) (K + 8)
The second is: 2 (x-4y) (x Λ 2 + 4xy + 16y Λ 2)

First question:
（K＋1）∧2－（K+1）-56
[cross method]
1 -8
X
1 7】
=[(K+1)-8][(K+1)+7]
=(K-7)(K+8)
Note: the problem is to treat K + 1 as a letter
Second question:
2X∧3-128y∧3
=2（X∧3-64y∧3）
=2[X∧3-（4y）∧3]
=2 (x-4y) (x Λ 2 + 4xy + 16y Λ 2)

How many days are there from December 27, 2010 to January 23, 2012?

3 + 365 + 23 = 391 days

Charge calculation in RCL circuit
Q(t)=QoCOS(wt)e^(-Rt/2L)
If Qo = 0.001, w = 6324.24, t = 0.001, l = 0.025, r = 3.162
Q (T) is just how much. I always make grammatical mistakes in calculating e ^ (- RT / 2L) with a calculator. What's the matter?

Q（t）=0.001cos(6324.24*0.001)*e^(-3.162*0.001/(2*0.025)
=0.000938

April 1, 2008 is Tuesday. What day is May 1, 2008? How to calculate?

2008
There are 30 days in April. 30 = 28 + 2
April 1, April 29, Tuesday. (29-1 = 28 = 4 * 7)
April 30 is Wednesday,
May 1st is Thursday

All chemical expressions in grade three

Literal expression is a chemical term used to express chemical changes. It is often used before learning chemical equations. After learning chemical equations, we mainly use chemical equations. It is meaningless to summarize literal expression

Find the number of all integers between ten and one thousand, divided by seven to five, divided by five to three, and divided by three to one

Let this digit X have X + 2 = 3 × 5 × 7a (a is an integer), then x = 105a-2, and a can be any number from 1 to 9

How to solve the tax rate calculation formula of small scale taxpayers?

If you issue a VAT invoice, if you issue an invoice of 100 yuan, then the sales revenue is: 100 / 1.03 = 97.09, and the VAT is 100-97.09 = 2.91 yuan (or 97.09 * 0.03 = 2.91)