The definition and method of factorization

The definition and method of factorization

Definition: the transformation of a polynomial into the product of several simplest integers is called factorization of the polynomial

On the concept of factorization
Is factorization just to decompose a polynomial into a monomial? Is it true that sometimes the results are different (the monomials are different, but the results of the monomials are the same)?

Please refer to the answer "is the answer unique to cross multiplication?" which will give you the answer

As shown in the figure, in ⊙ o, CD is the diameter, AB is the chord, ab ⊥ CD is in M, CD = 10cm, DM: cm = 1:4, find the length of the chord ab

As shown in the figure, connect OA. ∵ CD = 10cm, DM: cm = 1:4, ∵ cm = 8, DM = 2, ∵ om = 5-2 = 3cm, OA = 5cm, and ∵ CD is diameter, AB is chord, ab ⊥ CD is in M, ∵ AB = 2am (3 points) in RT △ AOM, ∵ am = oa2 − om2 = 52 − 32 = 4cm, ∵ AB = 8cm

21 times 3.14 plus 62 times 3.14 plus 17 times 3.14

=（21+62+17）×3.14
=100×3.14
=314

In the triangle ABC, B is equal to 2 C, ad is the height on the edge of BC. It is proved that ab plus BD equals DC

It is proved that: take point E on the extension line of CB, make be = AB, connect AE
∵BE＝AB
∴∠E＝∠BAE
∴∠ABC＝∠E+∠BAE＝2∠E
∵∠ABC＝2∠C
∴∠E＝∠C
∴AE＝AC
∵AD⊥BC
Ed = DC (three in one)
∵ED＝BE+BD＝AB+BD
∴AB+BD＝DC

How many meters is 90 cm divided by 10

90cm divided by 10 = 9cm = 0.09m

The determinant of matrix
Let a be a matrix of order 3 and a & sup2; = 0, then ()
A.A=0 B.∣A∣≠0 C.r(A)=0 D.∣A∣=0
Give reasons

Because a ^ 2 = 0, so | a ^ 2 | = 0. From | a ^ n | = | a | ^ n, | a | ^ 2 = 0. So | a | = 0

80 degrees 32 minutes 115 seconds + 90 degrees 27 minutes 45 seconds = 100 degrees - 36 degrees 18 minutes 52 seconds=
80 degrees 32 minutes 15 seconds + 90 degrees 27 minutes 45 seconds = ()
100 degrees - 36 degrees 18 minutes 52 seconds = ()

171 degrees
63 degrees 41 minutes 8 seconds

What is the limit of sin (1 / x) / 1 / X when x tends to zero
That is: X * sin (1 / x) when x tends to the limit of 0

If x approaches 0, then 1 / x approaches infinity
Consider 1 / X as an unknown Z, which approaches infinity
Original formula = Sinz / Z
When Z approaches infinity, Sinz approaches 1
Then Sinz / Z approaches 0
So the limit is zero

Simple calculation of 13.7 × 8.6 + 2.4 × 13.7-13.7

13.7×8.6+2.4×13.7-13.7=13.7*(8.6+2.4-1) =13.7*10 =137