Write a quadratic trinomial about X, and the coefficient of the quadratic term is - 1, then the quadratic trinomial is ()

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• 1. Simplify 5 times of X + 4 times of 4x + 3 times of 6x + 2 times of 6x + 2x + 3 4 times (to the fourth power of x)
• 2. If we know that 3 times of X + 2 times of X + X + 1 = 0, then the value of 4 times of X + 3 times of X + 2 times of X + X + 1 is 0
• 3. What is the fifth power of X + the fourth power of X and the second power of Y under the root sign urgent need But also the process
• 4. In the (x-1) - (x-1) ^ 2 + (x-1) ^ 3 - (x-1) ^ 4 + (x-1) ^ 5 expansion, find the coefficient of x ^ 2
• 5. Find the coefficient of the x ^ (- 3) term of (x + 1 / x) ^ 6 * (x-1) ^ 3 expansion
• 6. What is the coefficient of the x ^ 3 term in the (1-x + x ^ 2) (1 + x) ^ 6 expansion
• 7. Let f (x) = (1 + x) ^ 6 (1-x) ^ 5, then what is the coefficient of x ^ 3 in F '(x)?
• 8. Find the coefficient of x ^ 5 in (1 + x-x ^ 2) ^ 6 expansion Please explain the process. Thank you The answer is 6
• 9. The coefficient of X in (1 + 2x) ^ 3 (1-x) ^ 4 expansion is? Don't omit the steps, but the process of solving the problem in detail
• 10. What is the sum of the coefficients of the polynomial obtained from the square expansion of (1 + 2x-x's Square)
• 11. Write a quadratic trinomial about x such that its quadratic coefficient is - 5, then the quadratic trinomial is______ ．
• 12. A quartic trinomial about the letter X does not contain the cubic term and the first term. The highest coefficient is 6, the coefficient of the second term is - 1, and the constant term is 1 / 2. Write this quartic trinomial Trinomial
• 13. On the cubic trinomial of X, if the coefficient of the cubic is 3, the coefficient of the quadratic is - 2, and the coefficient of the primary is - 1, then the cubic trinomial is______ ．
• 14. On the cubic trinomial of X, if the coefficient of the cubic term is 3, the coefficient of the quadratic term is - 2, and the coefficient of the first term is - 1, then what is the cubic trinomial? Explain why
• 15. F (x), G (x) are integral coefficient polynomials, G (x) are primitive, f (x) = g (x) H (x), H (x) are rational coefficient polynomials. It is proved that h (x) is integral coefficient polynomials
• 16. A is a root of F (x) = x cube-3x + 10, B = (square of a + A-2) / 2H (x) is a quadratic polynomial with rational coefficient, H (b) = a, find H (0) The answer is known and understood, but one thing in the process is not very clear,
• 17. Let B be a root of the cubic polynomial f (x) = x3-3x + 10, and a = (B2 + b-2) / 2. If h (x) is a quadratic polynomial with rational coefficients and satisfies the condition H (a) = B, then H (b) =?
• 18. Is a root of the cubic polynomial f (x) = x ＾ 3-3x + 10, and a = (? ＾ 2 +? - 2) / 2. If h (x) is a quadratic polynomial with rational coefficients, then Is a root of the cubic polynomial f (x) = x ＾ 3-3x + 10, and a = (? ＾ 2 +? - 2) / 2. If h (x) is a quadratic polynomial with rational coefficients and satisfies the condition H (a) =?, then H (0)=
• 19. If the sum of the quadratic coefficients and the constant terms of the quadratic coefficients of a quadratic equation of one variable is 0, then there must be a root of the equation which is zero
• 20. In the quadratic trinomial of letter A, if the coefficient of the quadratic term is 2, the coefficient of the primary term is 4, and the constant term is - 3, then the quadratic trinomial is______ ．