Can't help English It's easy to mix a phrase with can't help doing. It's also in this structure, but it's not adding doing after it. What's this phrase again?

Can't help English It's easy to mix a phrase with can't help doing. It's also in this structure, but it's not adding doing after it. What's this phrase again?

can't wait to do sth.

Can't help doing sth

can not help doing sth

What's the pronunciation of "gift"?

zèng sòng
The verb provides something for [someone] by giving a gift. (1) farewell. Preface to poetry · Qinfeng · Weiyang: "Mu Gong Na, Wengong, the eldest son of Kang Gong, presented Wengong to Weiyang." preface, the reason why the classics are written, is that, It is also right for later generations to present Chen Ji and other works. "(2) to give property or title to others without cost." Hou Han Shu · Zhou jingzhuan "says:" all gifts are sufficient. "Chapter 11 of Xiao Jun's mine in May:" because the trade union works well in peacetime, he was given the glorious title of "model trade union worker" at this meeting. "

What is the main test point of circle and straight line in unit 4 of senior high school mathematics compulsory 2?

Tangent line and circle, intersection problem, from the geometry and kangaroo two angles, (intersection problem generally to simultaneous equations) to find the trajectory equation, the equation of the circle, the standard and general formula, the equation of the straight line, oblique section, point oblique, intercept. These must be able to
(if it works for you)

Finding indefinite integral ∫ 1 / (X & # 178; + 2x + 5) DX

English translation
It has the oldest port built by the Romans in the first century AD, the oldest building begun by the Anglo Saxons in the 1060s and the oldest Castle constructed by later Norman rules in 1066

There are the oldest ports built by Rome in the first century A.D., the ancient buildings built by the Anglo Saxons in the 1060s, and the ancient castles built by later Normans in 1066

Factorization and equation
Factorization: x ^ 4-12x ^ 3 + 47x ^ 2-62x + 26
Solution equation: 9x ^ 4 + 69x ^ 3-29x ^ 2-41x-8 = 0

Let x ^ 4-12x ^ 3 + 47x ^ 2-62x + 26 = (x ^ 2 + A * x + 26) * (x ^ 2 + b * x + 1)
Expansion = x ^ 4 + (a + b) * x ^ 3 + (a * B + 27) * x ^ 2 + (a + 26 * b) * x + 26
So there must be:
a+b=-12
a+26b=-62
The solution is: a = - 10, B = - 2
So x ^ 4-12x ^ 3 + 47x ^ 2-62x + 26 = (x ^ 2-10 * x + 26) * (x-1) ^ 2
So the solution of the original equation is: x = 1 (x ^ 2-10 * x + 26 = 0, no real root)

Rectangle area formula

The letter is: a times B
Chinese characters are: length multiplied by width

Solve the equation log2 (x-3) - Log1 / 2 (x) = 2

㏒2(x-3)+㏒2x=2
㏒2(x^2-3x)=2
x^2-3x-4=0
X = - 1 or 4

Calculate the 5th power of 1. (P-Q) / square of bracket (P-Q) and the 3rd power of bracket (Q-P)
2. (m-n) to the sixth power / (n-m) to the third power / (n-m)

Square of (P-Q) / square of (P-Q) - (Q-P) square of (P-Q) = (P-Q) / [(P-Q) + square of (P-Q)] = (P-Q) / (1 + P-Q) (m-n) / (n-m) = (m-n) / (m-n) / (m-n) = (m-n) / (m-n) / (m-n) = (m-n) / (m-n) = (m-n) / (m-n) = (m-n) / (m-n) = (m-n) = (m-n) / (m-n) = (m-n) = (m-n) = (m-n) / (m-n) =