Question

Given the trinomial x^2+bx-c where both the first sign is positive and the second sign is negative, the signs of the factors will be:
A. one positive and one negative
B. both negative
C. both positive
D. cannot determine

Answer 1

So

x^2-bx+c?

Answer 2

yeah

Answer 3

The signs of the terms would have to be both negative because a negative + a negative number is still a negative number so that will give you your negative middle term (-bx) and it will give you your positive last term (+c) because a negative times a negative is a positive

Answer 4

Ah b then? Gracias!

Answer 5

Say we had x^2-2x-1 we'd have that factored as (x-1)(x-1) because

x*x is x^2
-1x + -1x is -2x
And -1*-1 is +1.

Yes b, and you're welcome!