If the given expression is rewritten in the form , where k is a constant, what is the value of k ?
Correct answer: 4
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Explanation
The correct answer is 4. It’s given that can be rewritten as ; it follows that . Expanding the left-hand side of this equation yields . Subtracting from both sides of this equation yields . Using properties of equality, and . Either equation can be solved for k. Dividing both sides of by yields . The equation can be rewritten as . It follows that . Solving this equation for k also yields . Therefore, the value of k is 4.
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id cb_question_bank:c1f6f617-3f33-4f1e-90d4-c0395a2bcc7f · question 16de54c7 · IBN 027180-DC
· JSON