When x = 1, the value of mx2-3x-4 is 0, then the value of M is 0______ ．

∵ when x = 1, the value of the algebraic formula mx2-3x-4 is 0, then M-3 × 1-4 = 0 and M = 7, so the answer is 7

RELATED INFORMATIONS

1. Given the square of a + the square of B + 6a-10b + 34 = 0, find a + B
2. Ask a question: if the square of a + the square of B - 6A + 10B + 34 = 0, then what is the value of the algebraic formula a + B?
3. 6A square + a = 1 / 5 how much is a equal to
4. What is the square of 0.09A plus 0.6A plus one? What is the square of a minus four-thirds AB plus the square of a
5. It is known that: the square of a + the square of B - 2A + 4B + 5 = 0, find the value of 2ab-1 Please!
6. Given the absolute value of 2a-4 + the square of (B-3) = 0, find the value of (A's Square - 3b) - (4b-2a's Square)
7. How to solve (3b squared-1 / 2a) (a squared-4b)?
8. Given that 1:1 a minus 1:1 B = 3, find 2A + 3ab-2b of a-ab-b
9. If the value of 3A + 6B has nothing to do with the value of X Given that a = 2x square + 3xy-2x-1, B = - x square + XY-1, and 3a + 6B value is independent of X, find the value of Y Simplify to X (15y-6) - 9, the answer is: y = 0.4
10. Find three idioms with XXX heart, three idioms with XX heart, three idioms with XX heart and three idioms with XXX heart
11. When x = 2, the square of the algebraic formula MX-5 / 6x + 1 is 0, then when x = 3, its value is () A. - 5 / 6 B.5 / 6 C. - 2 d.0
12. When x = 2, the value of the algebraic formula MX ^ 2-5 / 6x + 1 is 0, then what is the value of M?
13. Given that the square of the algebraic formula m plus m minus 1 equals 0, then the cube of the algebraic formula m plus 2 times the square of m plus 2003 equals?
14. When m = - 6 / 1, the value of the algebraic formula M & # 178; - 9 / 21-5m-m & # 178; - 9 / M divided by M + 3 / M-M + 3 / M-3 is
15. Given: (M & # 178; + n & # 178;) (M & # 178; + n & # 178; - 9) = 0, find the value of the algebraic formula M & # 178; + n & # 178;)
16. Given M-N = 1 / 2, then the value of the algebraic formula (M + n) ² - 4Mn is
17. Given m = 1 + √ 2, n = 1-2, find the value of the algebraic formula √ M & # 178; + n & # 178; - 3MN
18. The algebraic formula x ^ 2 + 4Y ^ 2-4x + 12Y + 27 has the minimum value when x and y are values
19. If the sum of the two numbers is 18 and one of them is m, then the product of the two numbers (expressed in an algebraic expression containing the letter M)
20. Let's change the subject (2n-m) is regarded as a letter, and the algebraic formula (2n-m) ^ 2-1 - (2n-m) ^ 3 + 2 (2n-m) is arranged according to the descending power of the letter (2n-m) 2. We know the polynomial (a + b) x ^ 4 + (b-2) x ^ 3-2 (A-1) x ^ 2 + ax-3 about X, excluding x ^ 3 term and x ^ 2 term. When we calculate x = - 1, the values of these polynomials are It is known that the polynomial (m-2) x ^ 8-N ^ n + 1 + 3x + n about X is a quartic trinomial about X, and the value of M and N can be obtained 4. The binomial - 2 / 3x ^ m y ^ n + 1 is a quintic binomial about X and y, and M is a prime number and N is a non negative number. Find the value of m ^ n