Question

In Exercises 38--45, complete the square and find the minimum or maximum value of the quadratic function.

38. y = x^{2} + 2x + 5 39. y = x^{2} - 6x + 9

40. y = -9x ^{2} +x 41. y = x^{2} + 6x + 2

42. y = 2x ^{2} - 4x - 7 43. y = -4x ^{2} + 3x + 8

44. y = 3x ^{2} + 12x - 5 45. y = 4x - 12x^{2}

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