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tmua.fyi Mock Paper 2 · Q14

Paper 2Algebra

bb is a real number, and x=bx=b is a root of the equation bx2−(b2+1)x+b=0bx^2-(b^2+1)x+b=0. Which of the following describes the complete set of possible values of bb?

Ab=0 or b=1b=0\text{ or }b=1
Bb=±1b=\pm1
Call real numbers
Db≠0b\ne0
Ethere is no such bb

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