Question
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Divide. \[ \left(12 x^{3}-24 x^{2}+6 x+10\right) \div\left(3 x^{2}-3 x\right) \] Your answer should give the quotient and the remainder. Quotient: \( \square \) Remainder: \( \square \)

Ask by Chadwick Rojas. in the United States
Feb 20,2025

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Tutor-Verified Answer

Answer

Quotient: \( 4x - 4 \) Remainder: \( -6x + 10 \)

Solution

Divide the polynomials by following steps: - step0: Using Long Division to Divide Polynomials: \(\left(12x^{3}-24x^{2}+6x+10\right)\div \left(3x^{2}-3x\right)\) - step1: Calculate: \(\left(4x-4\right)\text{ }\textrm{remainder}\text{ }\left(-6x+10\right)\) To divide the polynomial \( 12 x^{3}-24 x^{2}+6 x+10 \) by \( 3 x^{2}-3 x \), we perform polynomial long division. 1. **Divide the leading term**: - The leading term of the dividend is \( 12x^3 \) and the leading term of the divisor is \( 3x^2 \). - Dividing these gives \( \frac{12x^3}{3x^2} = 4x \). 2. **Multiply and subtract**: - Multiply \( 4x \) by the entire divisor \( 3x^2 - 3x \): \[ 4x(3x^2 - 3x) = 12x^3 - 12x^2 \] - Subtract this from the original polynomial: \[ (12x^3 - 24x^2 + 6x + 10) - (12x^3 - 12x^2) = -12x^2 + 6x + 10 \] 3. **Repeat the process**: - Now, divide the leading term of the new polynomial \( -12x^2 \) by the leading term of the divisor \( 3x^2 \): \[ \frac{-12x^2}{3x^2} = -4 \] - Multiply \( -4 \) by the divisor: \[ -4(3x^2 - 3x) = -12x^2 + 12x \] - Subtract this from the current polynomial: \[ (-12x^2 + 6x + 10) - (-12x^2 + 12x) = -6x + 10 \] 4. **Final remainder**: - The degree of the remainder \( -6x + 10 \) is less than the degree of the divisor \( 3x^2 - 3x \), so we stop here. Thus, the result of the division is: - **Quotient**: \( 4x - 4 \) - **Remainder**: \( -6x + 10 \) Final answer: - Quotient: \( 4x - 4 \) - Remainder: \( -6x + 10 \)

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The Deep Dive

To divide the polynomial \(12x^{3} - 24x^{2} + 6x + 10\) by \(3x^{2} - 3x\), we can use polynomial long division. 1. **Divide the leading terms**: \( \frac{12x^3}{3x^2} = 4x\). 2. **Multiply the entire divisor**: \(4x(3x^2 - 3x) = 12x^3 - 12x^2\). 3. **Subtract**: \[ (12x^{3} - 24x^{2} + 6x + 10) - (12x^{3} - 12x^{2}) = -12x^{2} + 6x + 10. \] 4. **Repeat for the new polynomial**: Divide the leading terms again: \( \frac{-12x^2}{3x^2} = -4\). 5. **Multiply the divisor again**: \(-4(3x^2 - 3x) = -12x^2 + 12x\). 6. **Subtract again**: \[ (-12x^{2} + 6x + 10) - (-12x^{2} + 12x) = -6x + 10. \] Now we’ve reached a degree (1) lower than the divisor (2). Thus, the quotient is \(4x - 4\) and the remainder is \(-6x + 10\). Final answers: Quotient: \(4x - 4\) Remainder: \(-6x + 10\)

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