Factorization factor (M + n) & #178; - 3 (M + n) + 9 / 4

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• 1. Eight problems of factoring in Mathematics （m+n）²-n² 49（a-b）²-16（a+b）² （2x+y）²-（x+2y）² 1/3m²-3n² （a+b）²-（a-b）² （9a+4b）²-（3a-b）²
• 2. 1. If we decompose X & # 178; - 8x + m into (X-5) (x + n), we can find the value of M and N. 2. We know that M & # 178; + n & # 178; + 6m-10n + 34 = 0 The values of (M + n) ² (m-n) ² - (m-n) (M + n) (M & #178; + n & #178;)
• 3. It is known that the expansion of (x-m) (X & # 178; + NX + 1) does not contain x, X2 terms. Try to find the value of M, n
• 4. Polynomial (A-4) x ^ 3-x ^ B + X-B is about the quadratic trinomial of X, find the opposite number of the difference between a and B! Be sure to make it clear, I don't know what is quadratic trinomial, make it clear, I read a = 4 from the Internet, why?
• 5. 1. The difference between the square + 3 of the polynomial 2Ab AB and the square + 3ab-1 of the polynomial 2Ab AB is ()
• 6. If A-1 / a = 2, then the value of a & # 178; + 1 / A & # 178; is
• 7. Given a 2-5A + 1 = 0 (a ≠ 0), find the value of a 2 + 1A 2
• 8. What's the sum of 17 and 3 / 4 plus minus 9 and 5 / 11 plus minus 2.25 plus minus 17.5 plus minus 10 and 6 / 11
• 9. How much is two plus three plus four plus five plus six?
• 10. Five plus five plus five is 550 plus one sum, which makes the formula true "Plus" and "equal" are symbols You can't change the equal sign. It's OK to sign both numbers
• 11. M-M Λ - 1 = 3, then M & #178; Λ - 2 =,
• 12. When n is a positive integer, is the value of square + N + 11 of N necessarily prime?
• 13. It is known that: m power of 2 = a, n power of 2 = B (m, n are positive integers), then m power + n power of 2 = what
• 14. Given that the fourth power of - M + the second power of 4m + the nth power of 2, the second power of M + the nth power of 2 + 5 = 0, and m and N are positive integers, find the value of M and N? There are points. Come and get them!
• 15. If M and N are integers and (MX + a) (x-3a) = 3x ^ 2 + nax-3a ^ 2, find the value of M and n
• 16. High school mathematics problem: the equation about X: the square of X - 2mx + the square of 2m - 1 = 0, have at least one negative root, find the value range of M Hurry!
• 17. 1. If two of the univariate quadratic equations 2x ^ 2-mx + 4 = 0 are x1, X2 and satisfy x2 / X1 + X1 / x2 = 2, the value of M is 2. Let X1 and X2 be the two roots of the equation x ^ 2-x-1 = 0. （1）x1^2x2+x1x2^2 (2)(x1-x2)^2 (3)(x1+1/x2)(x2+1/x1)
• 18. Xiao Ming and Xiao Liang are both about 1.6 times 10 of 2 cm square. Can Xiao Ming be 9cm higher than Xiao Liang
• 19. The height of both students is about 1.6 × 102 cm, but a says he is 9 cm higher than B. is it possible? If possible, please give examples; if not, please give reasons
• 20. It is known that the mass of the earth is 6 × 10 ^ 24kg, the mass of the sun is 2.0 × 10 ^ 30kg, and the orbit radius of the earth around the sun is 1.5 × 10 ^ 11m (1) The gravity of the sun on the earth (2) The centripetal acceleration of the earth around the sun