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Anonymous users2024-02-07The eight formulas of factorization are as follows: 1. The square difference formula a -b = (a + b) (a-b) 2, the perfect square common macro mask a +2ab + b = (a + b) 3, the cubic sum formula a +b = (a + b) (a -ab + b ) 4, the cubic difference formula a -b = (a-b) (a +ab + b ) 5, the complete cubic sum formula a +3a b + 3ab +b = (a + b) 6, the complete cubic difference formula a -3a b + 3ab -b = (a-b) 7, The three-term perfect square formula a +b +c +2ab+2bc+2ac=(a+b+c) 8. The cubic sum formula of the three terms a +b +c -3abc = (a + b +c) (a +b +c -ab-bc-ac) factor decomposition principle: 1. The decomposition factor is the identity deformation of the polynomial, which requires that the left side of the equation must be a polynomial.
2. The result of factoring must be expressed in the form of a product. 3. Each factor must be an integer, and the number of each factor must be lower than the number of the original polynomial. 4. At the end of the result, only small parentheses are left, and the factorization must be carried out until the factors of each polynomial can no longer be decomposed.
5. The first term of the polynomial of the result is generally positive. Extract the common factor in a formula, that is, through the formula reorganization, the rest of the noise and then extract the common factor. 6. The coefficient of the first item in parentheses is generally positive.
7. If there is a multiplication of a monomial and a polynomial, the mononomial should be brought before the polynomial. For example, (b+c)a should be written as a(b+c). 8. When there is no explanation of the real number during the examination, it is generally enough to only explain the rational number, and if there is an explanation of the real number, the vertical attendant generally has to be turned into a real number.
Formula: The first item has a negative and often mentions the negative, each item has a "public" first mention the "public", a certain item is proposed not to miss 1, and the parentheses are divided into "bottom".
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Anonymous users2024-02-06Wait a minute!! Give you a copy.
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Anonymous users2024-02-05Let the original formula be s, then (a 1)s (1 a) a(a 1) a(a does not dress up 1).
.a(a Seechasun1) a(a 1) (n 1), so as (a 1)s - s a(a 1) (n 1), plexus chain.
Hence the original formula s (a 1) (n 1).
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Anonymous users2024-02-04The process is skillfully shouted such as the width of the limbs, the spring calendar is naïve, and it is <>
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Anonymous users2024-02-0310 questions is too cheap.
Factorization: Formula method. Items of the same kind that can be merged should be merged.
1.-2b
2.Question 2: No. >>>More
1.(x+2)(x-2)
2.=a squared (x-y) - b squared (x-y) = (a squared - b squared) (x-y) = (x-y) (a+b) (a-b). >>>More
The first question takes the minimum value when a=2 and b=1, the second question = 3 to the 16th power, the third question has a side length of 5, and the fourth question = -1, I am a sky walker
1）3ay-3by=3y(a-b) _
2) A squared - 9b square = (a-3b)(a+3b) 3) a squared - 14a + 49 = (a-7) 2 4) n square - m square = (n-m) (n + m) 5) a square + 4ab + 4b square = (a + 2b) 2 6) x square + 8x + 12 = (x + 2) (x + 6) 7) x square (a + b) - y square (a + b). >>>More