Advanced Math practice question

Answer: 3

3x(2x − k) = 6x² − 3kx, so 3k = 9 and k = 3.

Common wrong answers

If you answered 6

6 copies the leading coefficient.

If you answered 9

9 forgets to divide by the 3 that was factored out.

If you answered -3

−3 has the sign wrong.

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