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Euclid Sample Paper 1 · Q14

Paper 1Algebra

For which values of kk does

∣x2−1∣=kx+1|x^2-1|=kx+1

have exactly three distinct real solutions?

Ak=0k=0 only
Bk=±1k=\pm1 only
C−1≤k≤1-1\leq k\leq1
Dk∈{−1,0,1}k\in\{-1,0,1\}
E∣k∣≥1|k|\geq1

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