Math Problem Statement

Let f(x)=4x2−3x+5f(x)=4x2-3x+5. When f(x)f(x) is divided by x+2x+2 the remainder is: When f(x)f(x) is divided by x+1x+1 the remainder is: When f(x)f(x) is divided by xx the remainder is: When f(x)f(x) is divided by x−1x-1 the remainder is: When f(x)f(x) is divided by x−2x-2 the remainder is:

Solution

To find the remainder when the polynomial f(x)=4x23x+5f(x) = 4x^2 - 3x + 5 is divided by different binomials, we can use the Remainder Theorem. The Remainder Theorem states that if a polynomial f(x)f(x) is divided by xax - a, the remainder is f(a)f(a).

Let's calculate the remainder for each case:

  1. When f(x)f(x) is divided by x+2x + 2: Using the Remainder Theorem, f(2)f(-2): f(2)=4(2)23(2)+5=4(4)+6+5=16+6+5=27f(-2) = 4(-2)^2 - 3(-2) + 5 = 4(4) + 6 + 5 = 16 + 6 + 5 = 27 So, the remainder is 27\mathbf{27}.

  2. When f(x)f(x) is divided by x+1x + 1: Using the Remainder Theorem, f(1)f(-1): f(1)=4(1)23(1)+5=4(1)+3+5=4+3+5=12f(-1) = 4(-1)^2 - 3(-1) + 5 = 4(1) + 3 + 5 = 4 + 3 + 5 = 12 So, the remainder is 12\mathbf{12}.

  3. When f(x)f(x) is divided by xx: Using the Remainder Theorem, f(0)f(0): f(0)=4(0)23(0)+5=5f(0) = 4(0)^2 - 3(0) + 5 = 5 So, the remainder is 5\mathbf{5}.

  4. When f(x)f(x) is divided by x1x - 1: Using the Remainder Theorem, f(1)f(1): f(1)=4(1)23(1)+5=4(1)3+5=43+5=6f(1) = 4(1)^2 - 3(1) + 5 = 4(1) - 3 + 5 = 4 - 3 + 5 = 6 So, the remainder is 6\mathbf{6}.

  5. When f(x)f(x) is divided by x2x - 2: Using the Remainder Theorem, f(2)f(2): f(2)=4(2)23(2)+5=4(4)6+5=166+5=15f(2) = 4(2)^2 - 3(2) + 5 = 4(4) - 6 + 5 = 16 - 6 + 5 = 15 So, the remainder is 15\mathbf{15}.

Summary of Remainders:

  1. x+2x + 2: remainder is 27
  2. x+1x + 1: remainder is 12
  3. xx: remainder is 5
  4. x1x - 1: remainder is 6
  5. x2x - 2: remainder is 15

Would you like more details on any of the steps or have any questions?


Here are 5 related questions to explore further:

  1. What is the Remainder Theorem, and how is it applied in polynomial division?
  2. How would you factorize the polynomial f(x)=4x23x+5f(x) = 4x^2 - 3x + 5?
  3. How do you perform synthetic division to verify the remainders?
  4. Can you determine the quotient when dividing f(x)f(x) by x+2x + 2?
  5. How would you find the remainder if you divided f(x)f(x) by a quadratic binomial?

Tip: The Remainder Theorem is a quick and efficient way to find remainders without needing to perform full polynomial division.

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Math Problem Analysis

Mathematical Concepts

Algebra
Polynomials
Remainder Theorem

Formulas

f(x) = ax^2 + bx + c
Remainder Theorem: f(a) gives the remainder when f(x) is divided by x - a

Theorems

Remainder Theorem

Suitable Grade Level

Grades 9-12