If two roots of are equal in magnitude but opposite in sign

MATHEMATICS · Single correct · CBSE · Mathematics · Polynomials · Polynomials

Problem

If two roots of x3−ax2+bx−c=0x^3-ax^2+bx-c=0 are equal in magnitude but opposite in sign. Then: (a) a+bc=0a+bc=0 (b) a2=bca^2=bc (c) ab=cab=c (d) a−b+c=0a-b+c=0

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