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Factor.\newline3y315y24y+203y^3 - 15y^2 - 4y + 20

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Q. Factor.\newline3y315y24y+203y^3 - 15y^2 - 4y + 20
  1. Factor out common factors: Factor out the greatest common factor from the first two terms and the last two terms separately.\newlineFor the first two terms, 3y33y^3 and 15y2-15y^2, the greatest common factor is 3y23y^2.\newlineFor the last two terms, 4y-4y and +20+20, the greatest common factor is 4-4.\newlineSo we have:\newline3y315y2=3y2(y5)3y^3 - 15y^2 = 3y^2(y - 5)\newline4y+20=4(y5)-4y + 20 = -4(y - 5)
  2. Rewrite using factored terms: Now, we rewrite the original polynomial using the factored terms from Step 11.\newlineThe polynomial becomes:\newline3y2(y5)4(y5)3y^2(y - 5) - 4(y - 5)
  3. Factor out common binomial: Factor out the common binomial factor (y5)(y - 5) from both terms.\newlineWe can see that (y5)(y - 5) is a common factor in both terms, so we factor it out:\newline(3y24)(y5)(3y^2 - 4)(y - 5)
  4. Check for further factoring: Check the factored form for any possible further factoring.\newlineThe first term, 3y243y^2 - 4, is a difference of squares and can be factored further.\newlineThe second term, y5y - 5, cannot be factored further.\newlineSo we factor 3y243y^2 - 4 as (3y2)(3y+2)(\sqrt{3}y - 2)(\sqrt{3}y + 2).\newlineHowever, this is incorrect because 3y243y^2 - 4 is not a difference of squares since 33 is not a perfect square.