次の2次方程式を解きなさい
x2-4= 0 x2-1= 0 x2-6= 0 x2-7= 0 x2-12= 0 x2-8= 0 3x2-6= 0 2x2-10= 0
次の2次方程式を解きなさい
x2-5x= 0 x2+x= 0 3x2-6x= 0 2x2-2x= 0 3x2+10x= 0 2x2-7x= 0
x = 2,-2
x = 1,-1
x = ±6
x = ±7
x = ±23
x = ±22
x = ±2
x = ±5
x = 5,0
x = -1,0
x = 2,0
x = 1,0
x = 0,-103
x = 72,0
次の2次方程式を解きなさい
x2-9= 0 x2-16= 0 x2-3= 0 x2-11= 0 x2-75= 0 x2-98= 0 3x2-9= 0 2x2-4= 0
次の2次方程式を解きなさい
x2+9x= 0 x2-16x= 0 3x2+12x= 0 5x2-20x= 0 3x2-4x= 0 7x2+24x= 0
x = 3,-3
x = 4,-4
x = ±3
x = ±11
x = ±53
x = ±72
x = ±3
x = ±2
x = -9,0
x = 16,0
x = 0,-4
x = 4,0
x = 43,0
x = 0,-247
次の2次方程式を解きなさい
x2-49= 0 x2-144= 0 x2-105= 0 x2-39= 0 x2-24= 0 x2-288= 0 5x2-30= 0 3x2-45= 0
次の2次方程式を解きなさい
x2+14x= 0 x2-18x= 0 2x2+8x= 0 3x2-36x= 0 4x2+6x= 0 21x2-14x= 0
x = 7,-7
x = 12,-12
x = ±105
x = ±39
x = ±26
x = ±122
x = ±6
x = ±15
x = -14,0
x = 18,0
x = 0,-4
x = 12,0
x = 0,-32
x = 23,0