Question

Convert the function into standard form. Show your work y=(x-4)(x+2)

Answer 1

Convert the function into intercept form. Show your work
y=x^2-3x-24

Answer 2

u want answer for 1st one or 2nd one ?

Answer 3

both

Answer 4

for the first one...
ax^2 + bx + c is the slandered form .
to get that expand the expression (x-4)(x+2)
wt will u get ?

Answer 5

y = (x-4)(x+2)
= x^2 + 2x -4x -8
= x^2 -2x -8
this is the slandered form...
did u get it?

Answer 6

yes

Answer 7

now for the second one... pls check ur question again... r u sure it's x^2-3x-24 ?

Answer 8

y=x^2-3x-24

Answer 9

to convert it into intercept forms mean u have to write it like
(x + or - "something")(x + or - "something")
i.e for example..
(x +3)(x-2)
(x-4)(x-1)
these r the examples for intercept form...

Answer 10

which mean u have to write y=x^2-3x-24 in this form
(x + _)(x+ _)
to do that we have to factorize it..
but
y=x^2-3x-24 doesn't factorize easily that's the problem here ......

Answer 11

wt ?? wt is ur answer ?

Answer 12

ummm... ur reply is hard to understand lol
wht did u mean by this ?
"what is is converted into intercept form"

Answer 13

can u answer the question? Convert the function into intercept form. Show your work y=x^2-3x-24

Answer 14

y=x^2-3x-24
= (x - 3/2)^2 -24 - 9/4
= (x - 3/2)^2 -105/4
this is the vertex form..
use this and find the x coordinates when y is 0
which means solve this when
(x - 3/2)^2 -105/4 = 0
( x - 3/2)^2 = 105/4
\[(x -\frac{ 3 }{ 2 }) = \frac{\pm \sqrt{105}}{ 2 }\]
\[x = \frac{ 3\pm \sqrt{105} }{ 2}\]

so the graph will cut the x axis when
\[x = \frac{ 3 + \sqrt{105} }{2 } \ or \ x = \frac{ 3 - \sqrt{105} }{2 }\]

so... the intercept form is..
\[y = ( x -\frac{ 3 +\sqrt{105} }{ 2 } )(x - \frac{ 3 - \sqrt{105} }{ 2 })\]

usually we don't write this kind of intercept formm...

Answer 15

and ur graph is something like this..
http://fooplot.com/plot/8ge9iug37x
u can c that "x" axis is cut when x is not a whole number..

Answer 16

that's y I asked u to double check the problem...
it would have been much easier if it was
y = y=x^2-2x-24