一、1.25x²=32 x^2=32/25 x=正负根号32/25=正负4根号2/5
x1=4根号2/5 x2=-4根号2/5
2.(2x-1)²=9 2x-1=正负3 x1=2 x2=-1
二、1.x²-10x-24=0 (x-12)(x+2)=0 (x-12)=0或(x+2)=0
x1=12 x2=-2
2.2(x+1)²=3x+3 2(x+1)²-3(x+1)=0 (x+1)(2x+2-3)=0
x1=-1 x2=1/2
一、1.25x²=32 x^2=32/25 x=正负根号32/25=正负4根号2/5
x1=4根号2/5 x2=-4根号2/5
2.(2x-1)²=9 2x-1=正负3 x1=2 x2=-1
二、1.x²-10x-24=0 (x-12)(x+2)=0 (x-12)=0或(x+2)=0
x1=12 x2=-2
2.2(x+1)²=3x+3 2(x+1)²-3(x+1)=0 (x+1)(2x+2-3)=0
x1=-1 x2=1/2