【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4
问题描述:
【数学化简求值】(x-2)×(x²-4)分之2x+(x+2)分之4
【数学化简求值】
(x-2)×(x²-4)分之2x+(x+2)分之4
【1-(x-1)分之1】÷(x²-2x-1)分之(x²-4)
x=-1
【分式方程】
3/x-2 + 1/2-x = 1
x-2/x+2 = 1 - 4/x²-4
答
=(x-2)×2x/(x+2)(x-2)+4/(x+2)=2x/(x+2)+4/(x+2)=(2x+4)/(x+2)=22、(x-1-1)/(x-1) ×(x-1)²/(x+2)(x-2)=(x-2)/(x-1) ×(x-1)²/(x+2)(x-2)=(x-1)/(x+2)3 、两边乘以(x-2)得3-1=x-2x=4检验:x=4是方程的解4...