Decomposition factors: (1) the second power of 6x, the second power of Y, the third power of z-9xy, (2) the second power of 9a-6ab + 3A (3) - 7ab-14abx + 49aby (4) The second power of 4A B + the second power of 6ab-8a

RELATED INFORMATIONS

• 1. If 2A + B = 0, then | A / | B | - 1 | + | a | / B-2 |, is equal to (). A, 2b, 3C, 4D,
• 2. There is a reaction a + 2B → 3C + 4D as follows. It is known that the sum of mass of a and B is 18G and the mass ratio of C to D is 4:5 How much is C
• 3. Given 8A ^ 3B ^ m divided by 28a ^ n of B ^ 2 = 2B ^ 2 of 7, find the value of M, n (2) If 10 ^ a = 20, 10b = 5 ^ - 1, find 9 ^ a divided by 3 ^ 2B
• 4. Given the square of a + 10A + 25 + (B-3) square = 0, find the algebraic formula B ^ 4 / [A-B] ^ 2 * a ^ 3 + AB ^ 2-2a ^ B / b ^ 3 / [b ^ 2-A ^ 2] / AB + B ^ 2
• 5. If the third power of polynomial (m-n) x - the second power of X + x-n is a binomial expression about X, find the opposite number of the difference between M and n
• 6. If (the second power of a-3a-1) + a = the second power of A-A + 4, then a=______
• 7. (- 5A's M + 1 power, B's 2m-1) * (2a's n power, B's M power) = - 10A's 4 power, B's 4 power. Then M-N =?
• 8. If a < 0, - 1 < B < 0, then the order of squares of a, AB, AB from small to large is
• 9. If - 1 ＜ a ＜ 0, then a, 1a and A2 are arranged from small to large______ ．
• 10. Given that a ＜ 0, - 1 ＜ B ＜ 0, try to arrange a, AB, AB in the order from small to large
• 11. Who is the third power of 2 or the second power of 3, the sixth power of 5 and the fifth power of 6, the fourth power of 3 and the third power of 4, the seventh power of 6 and the sixth power of 7
• 12. 16 + 27 + 61 + 62 + 51 + 68 + 69 = (simple method)
• 13. 1 / 2 + (1 / 3 + 2 / 3) + (1 / 4 + 2 / 4 + 3 / 4) +. + (1 / 40 + 2 / 40 +... + 38 / 40 + 39 / 40) It can be seen that the number equidistant from the first place in each bracket is added, so the items in brackets can be arranged in reverse order and added Who can help me
• 14. 2\1+(3\1+3\2)+(4\1+4\2+4\3)+.+(40\1+40\2+.+40\38+40\39)
• 15. 1/2＋（1/3＋2/3）＋（1/4＋2/4＋3/4)＋.＋（1/40＋2/40＋.＋38/40＋39/40） 1/2＋（1/3＋2/3）＋（1/4＋2/4＋3/4）.＋（1/60＋2/60＋.＋58/60＋59/60）
• 16. 2/1+(3/1+3/2)+(4/1+4/2+4/3)+.+(1/40+2/40+...+38/40+39/40) One or two steps in the process, and the answer
• 17. 40 2／3•39 1／3=?
• 18. 1 × 2 / 1 + 2 × 3 / 1 + 3 × 4 / 1 + 4 × 5 / 1 +... + 39 × 40 / 1
• 19. My father is 47 years old and my son is 21 years old. How many years ago, my father was three times as old as my son?
• 20. My father is 32 years older than my son this year. Three years later, my father is five times older than my son. How old is my son this year