Question

What is the midpoint of the x-intercepts of
f(x) = (x – 4)(x + 4)?

(0,0)
(0,4)
(–4,0)
(2,0)

Answer 1

hmm ok, so this is what we have:
\[ 0= (x - 4)(x + 4) \]
that leads us to 2 different solutions:

\( 1) \ \ x-4=0 \Rightarrow x=0+4 \Rightarrow x=4 \)

\( 2) \ \ x+4=0 \Rightarrow x=0-4 \Rightarrow x=-4\)

what do we do next?

Answer 2

oh shoot uhm

Answer 3

its asking me where they meet on the graph right ?

Answer 4

the MIDDLE where they meet, yes

so we have got
\[ (4,0) ~and~ (-4,0) \]

you can directly tell where the 2 points middle is right?

Answer 5

(4,-4)

Answer 6

wait

Answer 7

-4

Answer 8

Nononono

they meet in the middle

Answer 9

that would just be zero tho

Answer 10

exactly -- \( (0,0) \)

Answer 11

ohhhh oml lol thank u

Answer 12

can u help me with more?

Answer 13

@Florisalreadytaken
The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?

–19
–9
1
10