The factorization of (X & sup2; + 2x) (X & sup2; + 2x-2) - 5 is performed by substitution

The factorization of (X & sup2; + 2x) (X & sup2; + 2x-2) - 5 is performed by substitution

Wrong. It's - 3, not - 5
Let a = x & # 178; + 2x
The original formula is a-178; - 2a-3
=(a-3)(a+1)
=(x²+2x-3)(x²+2x+1)
=(x+3)(x-1)(x+1)²

If f (x) satisfies the relation f (x + 2) = 2x + 5, then f (x)=______ ．

Let t = x + 2, х x = 2-T х f (T) = 2T + 9, and let x = t х f (x) = 2x + 9

Given f (x-1) = x ^ 2-2x, find f (x) by substitution method

f(x-1)=x^2-2x
Let X-1 = t, then x = t + 1
f(t)=（t+1）^2-2（t+1）=t²-1
So f (x) = x & # 178; - 1

It is known that f (half x minus one) = 2x + 3. It is necessary to find the analytic formula of F (x) by using the substitution method. We need help to solve it quickly

The answer is: F (x) = 4x + 7
Suppose 0.5x-1 = a
&Then: x = 2A + 2
&Because f (0.5x-1) = 2x + 3
&Then f (a) = 4A + 7
&That is: F (x) = 4x + 7

Do you capitalize English forms?

Capitalization

Which letters should be capitalized? The first and second or the first and third?

The first word of the surname and first name should be capitalized
If your name is Wang Zhaoran, write Wang Zhaoran

Must the first letter of English be capitalized?

Be sure to be bigger. English is the capital initial of a language noun

When should the first letter of a word in an English title be uppercase or lowercase?
The first letter of a word in the title of a common English article is capital,
The initials of and are not capitalized
I'd like to know if there are any relevant rules

The first and last must be capitalized
There are articles, short prepositions and conjunctions in the middle, and to in the infinitive
Long prepositions without along side underneath, etc. should be capitalized
All other nouns and verbs should be capitalized

In general, what word's initial is lowercase and what word's initial is uppercase?

In general, the so-called "notional words" are capitalized nouns, adjectives, adverbs, verbs, pronouns, etc., while the "functional words" are lowercase conjunctions and prepositions, etc

Do you want to capitalize all the words in your English homework

The first letter of a word does not need to be capitalized. The first letter of a sentence should be capitalized