3x & sup3; + 2x-5,4x & sup2; - 4x-1, a & sup3; - 3A & sup2; B + 3AB & sup2; - B & sup3;, factorization,
3x³+2x-5,=(3x+5)(x-1)4x²-4x-1,=4x²-4x+1-2=(2x-1)²-2=(2x-1-√2)(2x-1+√2)a³-3a²b+3ab²-b³=(a-b)(a²+ab+b²)-3ab(a-b)=(a-b)(a²-2ab+b²)=(a-b)³...
RELATED INFORMATIONS
- 1. First factorize, then evaluate 3A (2a & sup2; - 4A + 3) - 2A & sup2; (3a + 4), where a = - 2
- 2. The problem of merging similar items in grade one of junior high school, Remove the brackets and merge the same items x+(2x-1)-(x/3+3) 1 / 2 (square of X-Y) + 1 / 3 (square of X-Y) + 1 / 6 (square of X + square of Y)
- 3. Ask a few exercises about removing brackets and merging similar items in mathematics of grade one in junior high school~ Must copy the original title, talented prawns help me acridine 1: Remove the brackets and merge the similar items: (1)a+(-b+c-d)(2)a-(-b=c-d)(3)-(p+q)+(m-n) (4)(r+s)-(p-q)(5)3(2xy-y)-2xy(6)a+(5a-3b)-(a-2b) (7)x+[x+(-2x-4y)](8)1/2(a+4b)-1/3(3a-6b)(9)a+(2a-3c) (10)6x+2(x+3)(11)3x-(4y-2x)+y(12)(2x-2y)-(2y-3x) (13)(x-y)-2(x-3x-2y) 2: According to the rule of removing brackets, the__ Fill in "+" or "-" (1)a __ (-b-c)=a-b+c (2)a __ (b-c-d)=a-b+c+d (3)__ (a-b)__ (c+d)=c+d-a+b 3: Mr. Zhang asked the students to calculate "the value of the algebraic formula A & sup2; + a (a + b) - 2A & sup2; - 2b when a = 0.25 and B = - 0.37." Xiao Ming said that the result can be obtained without any conditions. Do you think what he said is reasonable? Give the reasons 4: First simplify, then find the value of the algebraic formula: (3a-5b) - 2 (3a-b), where a = - 2, B = 3
- 4. The problem of combining similar items and removing brackets in mathematics of grade one in junior high school Known: | x-y-3 | + (a + B + 4) 178; = 0, find [(X-Y) 178; - 3 (Y-X)] / [2A + 2B - (a + b)]
- 5. How to combine the similar items in the first grade of junior high school 1. When m = (), the algebraic expression 2x & sup2; - MXY + & frac34; X contains no XY term 2. The taxi charge standard of a city is: the starting price is 4 yuan, and the price per kilometer after 2 kilometers is 1.2 yuan. How much yuan should Zhang Liang pay for a kilometer? (expressed in algebraic formula) 3. Dividing by a number that is not zero is equal to multiplying by the reciprocal of the number? I'm a student of grade one in junior high school. I'm very dizzy about the merging of similar items in mathematics
- 6. Several problems of merging similar items in grade one of junior high school ①n-{n-2+[5m-3(n+2m)+6n]}+2n ②½x-2(x-1/3y²)+(-3/2x+1/3y²) ③2(t²-t-1)-(t²-t-1)+3(t²-t-1) ④-5(2m-n)-6(2n-3m) ⑤-3(ab-5b²+2a²)-3(7ab+1ba²-25b²)
- 7. 20 exercises of merging similar items of rational numbers
- 8. If the side length of the triangle ABC is a, B, C, the square of a + the square of B + the square of C + 338 = 10A + 24B + 26c, try to judge the shape of the triangle
- 9. The number whose absolute value is greater than 2 / 3 and less than 8 / 3 is ()
- 10. (1) If - a = - 4, then a =?; if the opposite number of - A is - 6, then a =? (2) how many negative integers have absolute values greater than 2.5 and less than 7.2? (3) If | M-1 | = M-1, then M is greater than or less than or equal to 1 (4) If 2 < a < 4, then | 2-A | + | A-4 | = what (5) Given that | a | = 2, | B | = 3, and B < A, then A-B = what
- 11. Factorization 1. A & sup3; + 3A & sup2; B + 3AB & sup2; + B & sup3; 2. A & sup3; + 6A & sup2; B + 12ab + 8b & sup2; 3.6x & sup2; - 7x-5 Factorization 1. A & sup3; + 3A & sup2; B + 3AB & sup2; + B & sup3; 2. A & sup3; + 6A & sup2; B + 12ab + 8b & sup2; 3.6x & sup2; - 7x-5
- 12. Factorization: A & sup2; + 2Ab + B & sup2; - 3a-3b-4
- 13. Factorization: A & sup2; - 2Ab + B & sup2; - 3A + 3b-10
- 14. Factorization A & sup2; - 2Ab + B & sup2; - 3A + 3b-4
- 15. 2(2a²+9b)+3(-5a²-4b)
- 16. Given | 2a-c + & frac14;; (4b-5a) & sup2;; = 0, find a: B: C
- 17. 2006 and 2007 divide 2006 by 2006 in a simple way
- 18. How to write the formula of 2008 times 2007 of 2009 There are also 4 △ 132 + 6 × 53 (0.86 + 0.86 + 0.86 + 0.86) × 25 261-2.86 × (6.25-641) 261-2.86×(6.25-641) 7.6×21÷[1.9-1.9×(1.9-1.9)] (70+681)×691 1-1÷2-1÷3-61 19.98×37-199.8×1.9+1998×0.82
- 19. 2007 in addition to 2007 and 2008 in 2007 multiplied by 2009 + 2008 in 1
- 20. How much is 1:1 in 2009 multiplied by 1:1 in 2008 and 2009