The problem asks us to find the remainder when the polynomial $x^4 + 2x^2 - 3x + 7$ is divided by $x + 2$.

AlgebraPolynomialsRemainder TheoremPolynomial Division
2025/3/20

1. Problem Description

The problem asks us to find the remainder when the polynomial x4+2x23x+7x^4 + 2x^2 - 3x + 7 is divided by x+2x + 2.

2. Solution Steps

We can use the Remainder Theorem to find the remainder. The Remainder Theorem states that if we divide a polynomial f(x)f(x) by xcx - c, the remainder is f(c)f(c). In this case, we are dividing by x+2x + 2, so xc=x+2x - c = x + 2, which means c=2c = -2.
We need to evaluate the polynomial f(x)=x4+2x23x+7f(x) = x^4 + 2x^2 - 3x + 7 at x=2x = -2.
f(2)=(2)4+2(2)23(2)+7f(-2) = (-2)^4 + 2(-2)^2 - 3(-2) + 7
f(2)=16+2(4)+6+7f(-2) = 16 + 2(4) + 6 + 7
f(2)=16+8+6+7f(-2) = 16 + 8 + 6 + 7
f(2)=24+13f(-2) = 24 + 13
f(2)=37f(-2) = 37
The remainder is
3
7.

3. Final Answer

37

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