Factorization: A & sup2; + 2Ab + B & sup2; - 3a-3b-4

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• 1. 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
• 2. 3x & sup3; + 2x-5,4x & sup2; - 4x-1, a & sup3; - 3A & sup2; B + 3AB & sup2; - B & sup3;, factorization,
• 3. First factorize, then evaluate 3A (2a & sup2; - 4A + 3) - 2A & sup2; (3a + 4), where a = - 2
• 4. 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)
• 5. 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
• 6. 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)]
• 7. 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
• 8. 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）
• 9. 20 exercises of merging similar items of rational numbers
• 10. 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
• 11. Factorization: A & sup2; - 2Ab + B & sup2; - 3A + 3b-10
• 12. Factorization A & sup2; - 2Ab + B & sup2; - 3A + 3b-4
• 13. 2(2a²+9b)+3(-5a²-4b)
• 14. Given | 2a-c + & frac14;; (4b-5a) & sup2;; = 0, find a: B: C
• 15. 2006 and 2007 divide 2006 by 2006 in a simple way
• 16. 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
• 17. 2007 in addition to 2007 and 2008 in 2007 multiplied by 2009 + 2008 in 1
• 18. How much is 1:1 in 2009 multiplied by 1:1 in 2008 and 2009
• 19. How much is 2008 of 2009 minus 2007 of 2008? The score is fast!
• 20. What is the equivalent of 2008 * (2007 / 2009),