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Factor.\newline10r320r2r+210r^3 - 20r^2 - r + 2

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Q. Factor.\newline10r320r2r+210r^3 - 20r^2 - r + 2
  1. Group Terms: Look for common factors in pairs of terms.\newlineWe will first group the terms into pairs and look for common factors in each pair.\newlineGroup the terms: (10r320r2)(10r^3 - 20r^2) and (r+2)(-r + 2).
  2. Factor Common Factor: Factor out the common factor from the first pair of terms.\newlineIn the first pair 10r320r210r^3 - 20r^2, the common factor is 10r210r^2.\newlineFactor out 10r210r^2: 10r2(r2)10r^2(r - 2).
  3. Factor Binomial: Factor out the common factor from the second pair of terms.\newlineIn the second pair (r+2(-r + 2), there is no common factor other than 11. However, we can factor by looking for a term that will help us group the expression into a common binomial factor.\newlineWe can rewrite r+2-r + 2 as 1(r2)-1(r - 2) to match the binomial from the first pair.\newlineSo, r+2-r + 2 becomes 1(r2)-1(r - 2).
  4. Write Factored Expression: Write the expression with the factored groups.\newlineNow we have: 10r2(r2)1(r2)10r^2(r - 2) - 1(r - 2).
  5. Factor Common Binomial: Factor out the common binomial factor.\newlineWe can now factor out the common binomial factor (r2)(r - 2) from both terms.\newlineFactored form: (r2)(10r21)(r - 2)(10r^2 - 1).
  6. Recognize Difference of Squares: Recognize that 10r2110r^2 - 1 is a difference of squares.\newline10r2110r^2 - 1 can be factored further since it is a difference of squares: (10r)212(10r)^2 - 1^2.\newlineFactor the difference of squares: (10r+1)(10r1)(10r + 1)(10r - 1).
  7. Write Final Factored Form: Write the final factored form. Combine the factored terms to get the final factored form of the original expression. Final factored form: (r2)(10r+1)(10r1)(r - 2)(10r + 1)(10r - 1).