1) x^2 - 4x + 4 = 0 2) 2x^2 - 5x + 2 = 0 3) 3x^2 - 7x + 2 = 0 4) 4x^2 - 9x + 4 = 0 5) 5x^2 - 11x + 6 = 0 6) 6x^2 - 13x + 6 = 0 7) 7x^2 - 15x + 8 = 0 8) 8x^2 - 17x + 8 = 0 9) 9x^2 - 19x + 10 = 0 10) 10x^2 - 21x + 10 = 0