In Exercises 25-35, solve each system by the method of your choice. S5y = x² – 1 Sy = x + 2x + 1 25. 26. lx – y = 1 |x + y = 1 Sx² + y² = 2 27. S2x? + y? = 24 28. \x + y = 0 Ix² + y² = 15 Sxy – 4 = 0 Sy = 4x 29. 30. lx - 2y + 3 = 0 Sxy = 1 ly = y -x = 0 Sx² + y² = 10 31. 32. ly = x + 2 = 2x + 1 fx + y + 1 = 0 Jx² + y? = 13 33. 34. lu² + y? + 6y – x = -5 u² - y = 7 2r² + 3y2 = 21 35. %3D (3x² – 4y² = 23

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