Engineering Board Exam Reviewer · Polynomials: Remainder and Factor Theorems · easy

Find k so that x-2 is a factor of x2+kx-10.

1. -3
2. 3
3. 5
4. 6

Answer

B. 3

Solution

The factor theorem requires f(2)=0: 4+2k-10=0 k=3.

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