Question

See attachment.

Answer 1

a) 4x^2=20
x^2=5
x= \[x=\pm \sqrt 5\]

Answer 2

some really random math here
solutions are where the graph crosses the x- axis at
\[\pm\sqrt{5}\]

Answer 3

"solutions" and "x-intercept" are synonyms, so same answer for both

Answer 4

f(x)=4x^2-20
for x intercept
f(x)=0
which gives x=+ root 5 or - root 5

Answer 5

I'm SOO confused. Whats the answer for a) & b)?

Answer 6

both are same root 5 and - root 5

Answer 7

so i just put \[\sqrt{5}\]?

Answer 8

no both root 5 and -root 5

Answer 9

So like this?

Answer 10

yeah, correct. you can see from the graph that the curve is cutting x axis twice, so there are two solutions and two intercepts

Answer 11

ok THX

Answer 12

welcome