2次方程式計算 総合3
次の2次方程式を解きなさい
x2+2x-1=0 x2-4x-2=0 x2-6x-6=0 x2+8x+1=0 x2+10x+8=0 x2-12x+31=0 x2+14x+49=0 x2-11=0 x2+2x-15=0 x2-2x-24=0 x2-6x=0 3x2+24x=0 x2+5x=0 2x2-6x=0 x2-8=0 x2-16x+64=0
解説リクエスト
x2+2x-1=0 x2-4x-2=0 x2-6x-6=0 x2+8x+1=0 x2+10x+8=0 x2-12x+31=0 x2+14x+49=0 x2-11=0 x2+2x-15=0 x2-2x-24=0 x2-6x=0 3x2+24x=0 x2+5x=0 2x2-6x=0 x2-8=0 x2-16x+64=0