Answer:
Please Refer to Image.
Step-by-step explanation:
Before we begin answering, we need to go over the rules of multiplying polynomials.
Unlike in regular multiplication, we have to combine the like terms in the subtracting portion of the multiplication process.
Another rule is that when there are more than 1 variable in a term, we need to take the variables as two separate variables and then proceed to multiply them.
Answer:
• x = -4, x = 0, x = 1
Step-by-step explanation:
x is a factor of all terms, so x=0 is a zero. (Eliminates choices 1 and 5.)
The sum of coefficients is 0, so x=1 is a zero. (Eliminates choices 3 and 4.)
Reversing the sign of the odd-degree terms gives signs of -++, so there is one sign change, hence one negative real root (by Descartes' rule of signs). This confirms choice 2 as the answer.
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Of course, your graphing calculator can answer this almost as quickly.
