1. 解方程:$x^2 - 4x + 4 = 0$
解答:$(x - 2)^2 = 0$,所以 $x_1 = x_2 = 2$
2. 解方程:$2x^2 - 8x + 8 = 0$
解答:$2(x - 2)^2 = 0$,所以 $x_1 = x_2 = 2$
3. 解方程:$x^2 - 6x + 9 = 0$
解答:$(x - 3)^2 = 0$,所以 $x_1 = x_2 = 3$
4. 解方程:$x^2 + 2x - 3 = 0$
解答:$(x + 3)(x - 1) = 0$,所以 $x_1 = -3, x_2 = 1$
5. 解方程:$x^2 - 5x = 0$
解答:$x(x - 5) = 0$,所以 $x_1 = 0, x_2 = 5$
6. 解方程:$3x^2 - 12x = 0$
解答:$3x(x - 4) = 0$,所以 $x_1 = 0, x_2 = 4$
7. 解方程:$x^2 + 4x - 12 = 0$
解答:$(x + 6)(x - 2) = 0$,所以 $x_1 = -6, x_2 = 2$
8. 解方程:$x^2 - 10x + 24 = 0$
解答:$(x - 4)(x - 6) = 0$,所以 $x_1 = 4, x_2 = 6$
9. 解方程:$3x^2 - 12x = 0$
解答:$3x(x - 4) = 0$,所以 $x_1 = 0, x_2 = 4$
10. 解方程:$x^2 + 4x = 10$
解答:$x^2 + 4x - 10 = 0$,配方法得 $(x + 2)^2 = 14$,所以 $x + 2 = \pm \sqrt{14}$,即 $x_1 = -2 + \sqrt{14}, x_2 = -2 - \sqrt{14}$
这些题目涵盖了直接开平方法、配方法、公式法和因式分解法等多种解法,可以根据自己的解题习惯选择合适的方法。