Advanced MathEasy–MediumCoefficient of x after distributing 2x
Advanced Math practice question
The expression 2x(3x − 4) is equivalent to 6x² + kx, where k is a constant. What is the value of k?
Answer: -8
2x × (−4) = −8x.
Common wrong answers
- If you answered 8
- 8 has the sign wrong.
- If you answered -4
- −4 forgets to multiply by 2.
- If you answered -2
- −2 multiplies the wrong pair.
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