Mathematics for IGCSE & O level - Equations (Section 2 - No. 17)
When factorizing, what sign should the factors of 'c' have if 'c' is positive and 'b' is negative?
Both positive.
Both negative.
One positive, one negative.
It depends on the value of 'a'.
Giải thích
The factors of c must be negative, since the result needs to be positive and the sum needs to be negative.