计算5(x-3)²-125=0,
(2x+19)/(5x²-5)-17/(x²-1)-3/(1-x)=0计算
2x+19/(5x²-5)-17/(x²-1)-3/(1-x)=0计算
计算5x(2x² -3x+1)
计算:若x²+3x-1=0求x³+5x²+5x+8的值
计算:(x+4)²=5
计算:(x-3)²+4x(x-3)=0
计算:x²=5x
3X^2-2x+5=0 计算
6x的平方-5x-3=0 计算,
【计算】3x²×+(-x)³
计算(1).(5x-2)(x-3)-(3x-1)(x-4)= (2).(x+3)(x²+9)(x-3)=
计算 (5x-2)(x-3)-(3x-1)(x-4)= (x+3)(x²+9)(x-3)=