9x^3 + 72
Select the correct choice below.
(a) 9x^3 +72=?
(b) The polynomial is prime.
9x^3 + 72
Select the correct choice below.
(a) 9x^3 +72=?
(b) The polynomial is prime.
Its a Sum of Cubes pattern: (a+b)(a^{2}-ab+b^{2})....First factor out the "9" ... 9(x+2)(x^{2}-2x+4)
Comments
So is this the correct answer????
If you multiply 9(x+2)(x^{2}-2x+4) it will give you what you the polynomial you started with.... x^2-2x+4 cannot be factored for you...the solutions are part of the complex number system...which you should see in algebra 2