Answered

IDNLearn.com: Where your questions meet expert answers and community support. Our platform provides detailed and accurate responses from experts, helping you navigate any topic with confidence.

Need Help
Factoring completely. If polynomial is not factorable, write prime.


1.) 21x^3-18x^2y+ 24xy^2
2.) a^2+ 7a-18
3.) b^2 +8b + 7
4..) 4f^2-64
5.) 9x^2 + 25
6.) 8j^3k-4jk^3-7
8.) 2ak- 6a+k-3
9.)y^2+18y+81

Sagot :

[tex]1)\ 21x^3-18x^2y+24xy^2=3x(7x^2-6xy+8y^2)\\\\2)\ a^2+7a-18=a^2+9a-2a-18=a(a+9)-2(a+9)\\=(a+9)(a-2)\\\\3)\ b^2+8b+7=b^2+b+7b+7=b(b+1)+7(b+1)\\=(b+1)(b+7)\\\\4)\ 4f^2-64=4(f^2-16)=4(f^2-4^2)=4(f-4)(f+4)\\\\5)\ 9x^2+25-not\ factorable[/tex]

[tex]6)\ 8j^3k-4jk^3-7-not\ factorable\\\\8)\ 2ak-6a+k-3=2a(k-3)+1(k-3)=(k-3)(2a+1)\\\\9)\ y^2+18y+81=y^2+2y\cdot9+9^2=(y+9)^2=(y+9)(y+9)[/tex]
We value your participation in this forum. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Your questions are important to us at IDNLearn.com. Thanks for stopping by, and come back for more reliable solutions.