QuestionAugust 27, 2025

What is the remainder of f(x)=x^4-2x^3-27x^2-9x+18 when divided by binomial x+4 a. -8 b. -322 c. 6 d. 187

What is the remainder of f(x)=x^4-2x^3-27x^2-9x+18 when divided by binomial x+4 a. -8 b. -322 c. 6 d. 187
What is the remainder of
f(x)=x^4-2x^3-27x^2-9x+18
when divided by binomial x+4
a. -8
b. -322
c. 6
d. 187

Solution
4.0(278 votes)

Answer

c. 6 Explanation 1. Use the Remainder Theorem According to the Remainder Theorem, the remainder of a polynomial f(x) divided by (x - c) is f(c). Here, c = -4. 2. Substitute and Calculate Substitute x = -4 into f(x): f(-4) = (-4)^4 - 2(-4)^3 - 27(-4)^2 - 9(-4) + 18 Calculate each term: 256 + 128 - 432 + 36 + 18 = 6

Explanation

1. Use the Remainder Theorem<br /> According to the Remainder Theorem, the remainder of a polynomial $f(x)$ divided by $(x - c)$ is $f(c)$. Here, $c = -4$.<br />2. Substitute and Calculate<br /> Substitute $x = -4$ into $f(x)$: <br /> $f(-4) = (-4)^4 - 2(-4)^3 - 27(-4)^2 - 9(-4) + 18$<br /> Calculate each term: $256 + 128 - 432 + 36 + 18 = 6$
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