aX^2 +bX + c
(factor of a + factor of c)(corresponding factor of a + correspondingfactor of c)
both factors of c, when multiplied by its opposite constant, must add up to b.
Guess and check!
EXAMPLE:
2X^2 + X - 1
(2X - 1)(X + 1)
2 x 1 = 2
-1 x 1 = -1
1 x 2 + -1 x 1 = 1
just trying to keep up with the theme.
aX^2 +bX + c
(factor of a + factor of c)(corresponding factor of a + correspondingfactor of c)
both factors of c, when multiplied by its opposite constant, must add up to b.
Guess and check!