一元二次方程配方法20道题全对奖3QB要步骤哦每对5道题以上0.5QB[1]x^2-2X-2=0[2]2x^2+3X-1=0[3]2x^2-4系+1=0[4]x^2+6X+3=0[5]x^2-2√7X+2=0[6][X+2]+4X=0[7]-3x^2-6X+1=0[8]2/3y^2+1/3Y-2=0[9]0.4x^2-0.8X-1=0[10]x^2+7X-3
一元二次方程配方法20道题全对奖3QB要步骤哦每对5道题以上0.5QB
[1]x^2-2X-2=0
[2]2x^2+3X-1=0
[3]2x^2-4系+1=0
[4]x^2+6X+3=0
[5]x^2-2√7X+2=0
[6][X+2]+4X=0
[7]-3x^2-6X+1=0
[8]2/3y^2+1/3Y-2=0
[9]0.4x^2-0.8X-1=0
[10]x^2+7X-3=0
[11][X-1]^2-2[X-1]+1/2=0
[12]x^2+X-1=0
[13]2x^2-3X-6=0
[14][3X-1]^2=[3-2X]^2
[15][X-5][X+3]+[X-2][X+4]=26
[16][2X-3][2X-3]=x^2-6X+9
[17]4[X-1]^2-9=0
[18]x^2-2√5X+2=0
[19][Y-3]^2-18=0
[20][Y+√3]^2=4√3Y