Question

Factons of the
the following
x²– 9​

Answer 1

Answer:

This is a special case of the quadratic:

x

2

−

y

2

=

(

x

+

y

)

(

x

−

y

)

(

x

2

−

9

⇒

x

2

−

3

2

⇒

(

x

+

3

)

(

x

−

3

)

Answer 2

Step-by-step explanation:

x²– 9

x²+3x-3x– 9

x (x+3)-3 (x+3)

(x+3)(x-3)

So (x+3) and (x-3) are the factors of x²– 9

So x=+3 and x= -3 are the solutions