x-2+平方

闻庄斌4114x的平方+2x=3怎么解 -
荀枯颖19215952401 ______ x^2+2x-3=0 (x+1)^2-4=0 (x+1)^2=4 x+1=2或-2 x=1或-3

闻庄斌4114x/(x - 2)+2/(x平方 - 4)=1
荀枯颖19215952401 ______ x/(x-2)+2/(x平方-4)=1 x/(x-2)+2/(x+2)(x-2)=1 x(x+2)+2=(x+2)(x-2) x^2+2x+2=x^2-4 2x=-6 x=-3

闻庄斌4114(x+1)的平方 - (x - 1)(x+2)化解是多少 -
荀枯颖19215952401 ______ (x+1)的平方-(x-1)(x+2)=x²+1+2x-(x²+x-2)=x²+1+2x-x²-x+2=x+3;

闻庄斌4114(x+1)(x+3) - (x - 2)平方是多少 -
荀枯颖19215952401 ______ (x+1)(x+3)-(x-2)²=x²+4x+3-(x²-4x+4)=x²+4x+3-x²+4x-4=8x-1

闻庄斌4114(x - 2)平方 - x+2 -
荀枯颖19215952401 ______[答案] (x-2)平方-x+2=x²-4x+4-x+2=x²-5x+6=(x-2)(x-3)

闻庄斌4114求方程x的平方= - x+2 -
荀枯颖19215952401 ______ x的平方=-x+2x^2+x-2=0(x+2)(x-1)=0x+2=0 x-1=0x1=-2 x2=1

闻庄斌4114用公式法解 2x平方+x+2=0
荀枯颖19215952401 ______ 2x平方+x+2=0 2x平方+x+2-2=0-2 2x平方+x=0 [2+1]x平方=0 3x平方=0 3x平方/3=0/3 x=0

闻庄斌4114解方程:x/x+2 - x+2/x - 2=8/x平方 - 4 -
荀枯颖19215952401 ______ x/(x+2)-(x+2)/(x-2)=8/(x平方-4) x/(x+2)-(x+2)/(x-2)-8/{(x+2)(x-2)}=0 { x(x-2)-(x+2)(x-2)-8} / {(x+2)(x-2)} = 0 { x^2-2x-x^2+4-8} / {(x+2)(x-2)} = 0 { -2x-4} / {(x+2)(x-2)} = 0 -2(x+2) / 订虎斥臼俪铰筹歇船忙{(x+2)(x-2)} = 0 -2 / (x-2) = 0 无解

闻庄斌4114(2x+3)(x - 1) - 2(x+2)(x - 2) - (3x+2)的平方怎么算
荀枯颖19215952401 ______ 解:(2x+3)(x-1)-2(x+2)(x-2)-(3x+2)的平方=2x的平方+x-3-2x的平方+8-9x的平方-12x-4=-9x的平方-11x+1

闻庄斌41149(x+1)平方 - 16(x - 2)平方=0 -
荀枯颖19215952401 ______ 9(x+1)²-16(x-2)²=0 [3(x+1)]²-[4(x-2)]²=0(3x+3-4x+8)(3x+3+4x-8)=0(11-x)(7x-5)=0 x=11或x=5/7