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: \( \square \)
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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: \(-6x + 10\)