The range of x2-2x-3 / 2x2 + 2x + 1

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1. Find the range of y = (x2-2x-3) / (2x2 + 2x + 1) The range of y = (x2-2x-3) / (2x2 + 2x + 1) (2 after X means square)
2. The range of y = 2cos (2x + π / 3) + 1, X ∈ [0, π / 2]
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10. Monotone interval of y = log2 {4x-x square}
11. Let x1, X2 be the two real roots of the equation x2 + PX + q = 0, and X1 + 1, X2 + 1 be the two real roots of the equation x2 + QX + P = 0 about X, then P=______ ，q=______ ．
12. The root ratio of x ^ 2 + PX + q = 0 is 1:2, and the discriminant value is 1. Find the value of PQ and solve the equation
13. The solution of the equation PX + 8q = 333 of X is 1, and P, q are prime numbers, P
14. p. If q is prime and the equation x ^ 2-px + q = 0 has a positive integer root, then p =, Q=
15. If P is prime and both of the equations x2 + px-444p = 0 are integers, then p=______ ．
16. The solution of the equation PX + 8q = 333 of X is 1, and P and Q are prime numbers,
17. In the equation 15x40x-15x24x = 750x2, the large x multiplier and the small X are unknowns~
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