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Factor the following expression completely.

x^(4)-6x^(3)+5x^(2)-16x^(2)+96 x-80
Answer:

Factor the following expression completely.\newlinex46x3+5x216x2+96x80 x^{4}-6 x^{3}+5 x^{2}-16 x^{2}+96 x-80 \newlineAnswer:

Full solution

Q. Factor the following expression completely.\newlinex46x3+5x216x2+96x80 x^{4}-6 x^{3}+5 x^{2}-16 x^{2}+96 x-80 \newlineAnswer:
  1. Combine Like Terms: First, we need to combine like terms in the expression x46x3+5x216x2+96x80x^4 - 6x^3 + 5x^2 - 16x^2 + 96x - 80. Combining the x2x^2 terms: 5x216x2=11x25x^2 - 16x^2 = -11x^2. The expression now becomes x46x311x2+96x80x^4 - 6x^3 - 11x^2 + 96x - 80.
  2. Group and Factor: Next, we look for common factors in groups of terms. We can group the first three terms and the last two terms separately.\newlineGrouping: (x46x311x2)+(96x80)(x^4 - 6x^3 - 11x^2) + (96x - 80).
  3. Factor Quadratic: Now, we factor by grouping. For the first group x46x311x2x^4 - 6x^3 - 11x^2, we can factor out an x2x^2. This gives us x2(x26x11)x^2(x^2 - 6x - 11). For the second group 96x8096x - 80, we can factor out a 1616. This gives us 16(6x5)16(6x - 5). The expression now becomes x2(x26x11)+16(6x5)x^2(x^2 - 6x - 11) + 16(6x - 5).
  4. Substitute Factored Form: We now look for common factors between the two groups. There are no common factors between x26x11x^2 - 6x - 11 and 6x56x - 5, so we cannot factor further by grouping.\newlineWe must now factor the quadratic x26x11x^2 - 6x - 11.
  5. Check for Common Factors: To factor the quadratic x26x11x^2 - 6x - 11, we look for two numbers that multiply to 11-11 and add to 6-6. The numbers 11-11 and 11 satisfy these conditions. We can write x26x11x^2 - 6x - 11 as (x11)(x+1)(x - 11)(x + 1).
  6. Final Factored Form: Now we substitute the factored form of the quadratic back into the expression. The expression becomes x2(x11)(x+1)+16(6x5)x^2(x - 11)(x + 1) + 16(6x - 5).
  7. Final Factored Form: Now we substitute the factored form of the quadratic back into the expression. The expression becomes x2(x11)(x+1)+16(6x5)x^2(x - 11)(x + 1) + 16(6x - 5).We have factored the expression as much as possible. The final factored form is x2(x11)(x+1)+16(6x5)x^2(x - 11)(x + 1) + 16(6x - 5). However, we need to check if there is a common factor that we might have missed.
  8. Final Factored Form: Now we substitute the factored form of the quadratic back into the expression. The expression becomes x2(x11)(x+1)+16(6x5)x^2(x - 11)(x + 1) + 16(6x - 5).We have factored the expression as much as possible. The final factored form is x2(x11)(x+1)+16(6x5)x^2(x - 11)(x + 1) + 16(6x - 5). However, we need to check if there is a common factor that we might have missed.Upon re-examining the expression x2(x11)(x+1)+16(6x5)x^2(x - 11)(x + 1) + 16(6x - 5), we realize that there is no common factor between the two groups, and the quadratic has been factored correctly. Therefore, the expression is fully factored.

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