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Find the equation whose are the tr...

Find the equation whose are the translates of the roots of
` x^5 -4x^4 +3x^2 -4x +6=0` by ` -3`

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To find the equation whose roots are the translates of the roots of the given polynomial \( x^5 - 4x^4 + 3x^2 - 4x + 6 = 0 \) by \(-3\), we can follow these steps: ### Step 1: Define the original polynomial Let \( f(x) = x^5 - 4x^4 + 3x^2 - 4x + 6 \). ### Step 2: Translate the roots To translate the roots of the polynomial by \(-3\), we replace \( x \) with \( x + 3 \) in the polynomial. This means we need to compute \( f(x + 3) \). ### Step 3: Calculate \( f(x + 3) \) Now, we will substitute \( x + 3 \) into the polynomial: \[ f(x + 3) = (x + 3)^5 - 4(x + 3)^4 + 3(x + 3)^2 - 4(x + 3) + 6 \] ### Step 4: Expand each term Now we will expand each term: 1. **Expand \( (x + 3)^5 \)**: \[ (x + 3)^5 = x^5 + 15x^4 + 90x^3 + 270x^2 + 243 \] 2. **Expand \( -4(x + 3)^4 \)**: \[ -4(x + 3)^4 = -4(x^4 + 12x^3 + 54x^2 + 108x + 81) = -4x^4 - 48x^3 - 216x^2 - 432x - 324 \] 3. **Expand \( 3(x + 3)^2 \)**: \[ 3(x + 3)^2 = 3(x^2 + 6x + 9) = 3x^2 + 18x + 27 \] 4. **Expand \( -4(x + 3) \)**: \[ -4(x + 3) = -4x - 12 \] 5. **Constant term**: \[ +6 \] ### Step 5: Combine all the expanded terms Now we combine all these expanded terms: \[ f(x + 3) = (x^5 + 15x^4 + 90x^3 + 270x^2 + 243) + (-4x^4 - 48x^3 - 216x^2 - 432x - 324) + (3x^2 + 18x + 27) + (-4x - 12) + 6 \] ### Step 6: Simplify the expression Now we will combine like terms: - **For \( x^5 \)**: \( 1x^5 \) - **For \( x^4 \)**: \( 15x^4 - 4x^4 = 11x^4 \) - **For \( x^3 \)**: \( 90x^3 - 48x^3 = 42x^3 \) - **For \( x^2 \)**: \( 270x^2 - 216x^2 + 3x^2 = 57x^2 \) - **For \( x \)**: \( -432x + 18x - 4x = -418x \) - **Constant**: \( 243 - 324 + 27 - 12 + 6 = -60 \) ### Final Equation Thus, the equation whose roots are the translates of the roots of the original polynomial by \(-3\) is: \[ f(x + 3) = x^5 + 11x^4 + 42x^3 + 57x^2 - 418x - 60 = 0 \]
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