Question

Find the roots of the polynomial equation.



x2 – 14x – 32 = 0









A.

2 and –16








B.

–6 and 6








C.

–2 and 16








D.

–9 and 8

Answer 1

@Hero isn't A?

Answer 2

(x + 2)(x - 16)

I think you are guessing

Answer 3

Yes I am because I am NOT good at polynomial stuff.

Answer 4

You should practice factoring polynomials

Answer 5

I can factor but not the equation stuff.

Answer 6

So can you help?

Answer 7

The approach is always the same. You try to get the equation into the form

\(a^2 + bx + c = 0\)

Then check to see if it is factorable using the discriminant.
\(b^2 - 4ac\)

If so, factor the left side. Quadratic Polynomials will always factor into some form of
\((px + m)(qx + n)\) where:

\(p\) and \(q\) are factors of \(a\)
\(m\) and \(n\) are factors of \(c\)

Answer 8

oh ok so c

Answer 9

c is correct, but you will still need to practice factoring.

Answer 10

ok thank you