若2x 2 +1与4x 2 -2x-5的值互为相反数,则x的值是 [ ] A.-1或 B.1或- C.1或- D.1或
若2x2+1与4x2-2x-5的值互为相反数,则x的值是[]A.-1或B.1或-C.1或-D.1或...
若2x 2 +1与4x 2 -2x-5的值互为相反数,则x的值是 [ ] A.-1或 B.1或- C.1或- D.1或
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