One root of f(x) = 2x3 + 9x2 + 7x – 6 is –3. Explain how to find the factors of the polynomial.

Question

darkknight · Answer

$$2x^3+9x^2+7x-6$$
is our equation. Now since a root is -3, we can factor out x-3 from the equation.
First factor out x-3 from the equation at the top and then see if that helps

G3tH3Pxmpthat5Amx5t · Answer

a lil bit

darkknight · Answer

yes, first factor out x-3, and then tell me what you got. Then we can continue the problem

G3tH3Pxmpthat5Amx5t · Answer

what about the second part

darkknight · Answer

we'll get there

darkknight · Answer

The first step is to factor out x+3

darkknight · Answer

ATTENTION I MESSED UP EARLIER FACTOR OUT X+3 NOT X-3

darkknight · Answer

Sorry about that. Because -3 is a root, x + 3 would be needed to factor out because -3 + 3 = 0

G3tH3Pxmpthat5Amx5t · Answer

ok

darkknight · Answer

ur prolly gonna use polynomial long division

darkknight · Answer

r u stuck? If you are feel free to ask away.

G3tH3Pxmpthat5Amx5t · Answer

nah  i got it actually

darkknight · Answer

Okay, the whole thing?