已知ab互为相反数,且a.b不等于0 cd互为倒数x的绝对值2/x/+(a+b+cd)x-cd+b/a
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![已知ab互为相反数,且a.b不等于0 cd互为倒数x的绝对值2/x/+(a+b+cd)x-cd+b/a](/uploads/image/z/2448025-25-5.jpg?t=%E5%B7%B2%E7%9F%A5ab%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E4%B8%94a.b%E4%B8%8D%E7%AD%89%E4%BA%8E0+cd%E4%BA%92%E4%B8%BA%E5%80%92%E6%95%B0x%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC2%2Fx%2F%2B%28a%2Bb%2Bcd%29x-cd%2Bb%2Fa)
已知ab互为相反数,且a.b不等于0 cd互为倒数x的绝对值2/x/+(a+b+cd)x-cd+b/a
已知ab互为相反数,且a.b不等于0 cd互为倒数x的绝对值2
/x/+(a+b+cd)x-cd+b/a
已知ab互为相反数,且a.b不等于0 cd互为倒数x的绝对值2/x/+(a+b+cd)x-cd+b/a
ab互为相反数,且a.b不等于0 cd互为倒数
则a+b=0,cd=1
x的绝对值2
x=±2
/x/+(a+b+cd)x-cd+b/a
=2+(0+1)x-1-1
=x
=±2