csimps6966
contestada

i really need help with this so only answer if you know.
when you are finding the x-int in quadratics and you factor. What are the factors supposed to be equal to when you add them. The a or b?
Ej
y=x^(2)-6x+9
when you factor 9 when you add them does it have to equal A(1) or b(-6)?

Respuesta :

Margauxcolleye

Answer:

The sum has to equal b(-6)

Step-by-step explanation:

The equation factors into y=(x-3)^2 which distributes into y=x^2-3x-3x+9 so the two middle ones have to add up to -6

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