2012 · Q41
What is the value of k which will make the expression 4k^2 + 12k + k a perfect square?
Elementary MathematicsAlgebra
- A5
- B7
- C8
- D9
Explanation
4k^2+13k with k = 9 gives 441 = 21^2; no other option yields a perfect square.
What is the value of k which will make the expression 4k^2 + 12k + k a perfect square?
Explanation
4k^2+13k with k = 9 gives 441 = 21^2; no other option yields a perfect square.