If the 2n-3 power + 1 = 0 of equation 8x is a linear equation with one variable, then the value of n is If the 2n-3 power of equation 8x + 1 = 0 Is a linear equation of one variable, then the value of n is

Just let 2n-3 = 1, that is, n = 2

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1. If the value of polynomial 2mx2-x2 + 5x + 8 - (7x2-3y + 5x) is independent of X, the value of M2 - [2M2 - (5m-4) + M] is obtained
2. If the value of polynomial (2mx & # 178; - X & # 178; = 5x + 8) - (5x & # 178; - 3Y = 5x) has nothing to do with the value of X, find the value of M & # 179; - (2m & # 178; - (5m-4) + m)
3. Quarter x square + XY + y square
4. (1 / 2)+____ ）Square of x = one fourth of X + one third of XY + one ninth of Y
5. Square of (1 / 4) x + (1 / 3) XY + (1 / 9) y
6. (1) , 1-xy + 4 / 4 x square y (2), 38.9-2 × 38.9 × 48.9 + 48.9 square (3), 34 square + 34 × 32 + 16 square
7. Let u = 2x + 2Y + XY + 8 and budget constraint be 5x + 10Y = 50; (2) The marginal effect of money; (3) Maximum effect
8. Given that x ^ 2-y ^ 2 = XY, and XY ≠ 0, then XY ^ - 1 - x ^ - 1y (the minus 1 power of XY minus the minus 1 power of X, y)
9. If the square of x plus XY equals 2 and the square of y plus XY equals 7, then what is the square of x plus 2 and the square of XY plus y
10. If a is equal to the power of x minus the power of two times XY plus y, and B is equal to the power of x plus the power of two times XY plus y, then A-B is equal to
11. If 2x + y = 1, find the minimum value of x power of 4 + y power of 2
12. If the m-th power of the square of the monomial formula 3x multiplied by Y is the same as the 3-th power of the n-th power of 1 / 3 multiplied by X multiplied by Y, then M-N =?
13. If the n-th power of - 2mx is multiplied by the quadratic power of Y, which is the quintic monomial of X and y, we can find the value of M and n Why n + 2 = 5?
14. If 2x = 15, 4Y = 3, then the value of 2x-2y is______ ．
15. (2 power of Y) + (3 power of Y) - 5 power of 2Y · y How? Be more specific
16. Square two of a + 2A (B + C) + (B + C) quadratic
17. 6 (the square of a - 2A + 3)
18. 2 (2a + a) - 11 (2a + a) - 6 It should be 2 (square of 2A + a) - 11 (square of 2A + a) - 6
19. Then the value of (A-3) (a + 6) (a + 5) (A-4) + 20 is
20. (square of a-2a) (square of a-2a-6) + 9