Advanced MathEasy–MediumCoefficient of x in a product of binomials
Advanced Math practice question
When (3x + 2)(x − 4) is multiplied out and written as a polynomial, what is the coefficient of the x term?
Answer: -10
3x·(−4) + 2·x = −12x + 2x = −10x.
Common wrong answers
- If you answered 2
- 2 counts only 2·x.
- If you answered 10
- 10 has the sign wrong.
- If you answered -12
- −12 counts only 3x·(−4).
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