omar grouped the terms and factored the gcf out of the groups of the polynomial 3x³ - 15x² - 4x + 20. his…

omar grouped the terms and factored the gcf out of the groups of the polynomial 3x³ - 15x² - 4x + 20. his work is shown. step 1: (3x³ - 15x²)+(-4x + 20) step 2: 3x²(x - 5)+4(-x + 5) omar noticed that he does not have a common factor. which accurately describes what omar should do next? omar should realize that his work shows that the polynomial is prime. omar should go back and regroup the terms in step 1 as (3x³ - 15x²)-(4x + 20). in step 2, omar should factor only out of the first expression. omar should factor out a negative from one of the groups so the binomials will be the same.

omar grouped the terms and factored the gcf out of the groups of the polynomial 3x³ - 15x² - 4x + 20. his work is shown. step 1: (3x³ - 15x²)+(-4x + 20) step 2: 3x²(x - 5)+4(-x + 5) omar noticed that he does not have a common factor. which accurately describes what omar should do next? omar should realize that his work shows that the polynomial is prime. omar should go back and regroup the terms in step 1 as (3x³ - 15x²)-(4x + 20). in step 2, omar should factor only out of the first expression. omar should factor out a negative from one of the groups so the binomials will be the same.

Answer

Explanation:

Step1: Analyze Omar's work

Omar has grouped the polynomial as ((3x^{3}-15x^{2})+(-4x + 20)) and factored out GCFs to get (3x^{2}(x - 5)+4(-x + 5)). The binomials (x - 5) and (-x + 5) are almost the same.

Step2: Make binomials the same

If we factor out - 1 from the second - group (4(-x + 5)=-4(x - 5)). Then the polynomial becomes (3x^{2}(x - 5)-4(x - 5)=(x - 5)(3x^{2}-4)).

Answer:

Omar should factor out a negative from one of the groups so the binomials will be the same.