Question

What are the zeros of f(x) = x2 + x - 12?

Answer 1

??? Im sorry, i dont know

Answer 2

Answer:the answer is D

f

(

x

)

 has zeros at

−

3

and

4

Explanation:

f

(

x

)

=

x

2

−

x

−

12

x

−

2

=

(

x

+

3

)

(

x

−

4

)

x

−

2

∴

f

(

x

)

=

0

→

(

x

+

3

)

(

x

−

4

)

x

−

2

=

0

Hence the zeros of

f

(

x

)

occur when

(

x

+

3

)

(

x

−

4

)

=

0

Note:

f

(

x

)

is undefined at

x

=

2

∴

f

(

x

)

=

0

at

x

=

−

3

and

x

=

4

This can be seen from the grapg of

f

(

x

)

below:

graph{((x+3)(x-4))/(x-2) [-18.01, 18.04, -9.01, 8.99]}

Step-by-step explanation:

can I get brainliest