Advanced MathMediumConstant term of an expanded product
Advanced Math practice question
When (x + 1)(x + 2)(x + 3)(x + 4) is expanded, what is the constant term?
Answer: 24
The constant term is the product of the constants: 1 × 2 × 3 × 4 = 24.
Common wrong answers
- If you answered 1
- 1 is the leading coefficient.
- If you answered 10
- 10 is the sum 1 + 2 + 3 + 4, which is the coefficient of x³, not the constant.
- If you answered 12
- 12 is 3 × 4, leaving out two factors.
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