5.In the following equation, identify the x-intercepts in the graph y = 3x^2 + 19x – 40

Question

saifoo.khan · Answer

$$(x+8) (3 x-5)=0 $$

saifoo.khan · Answer

$$x = -8$$$$x = \frac 53$$

anonymous · Answer

if you could show work it would really help me because i have no idea how you got that

saifoo.khan · Answer

lol, what are u doing back at school?
jk.

anonymous · Answer

its not an in-schol class haha its online, very difficult when you have to teach yourself everything

anonymous · Answer

*school

saifoo.khan · Answer

3x^2 + 19x – 40

Factor,

3x^2 + 19x -40 = 0

3x^2 +24x -  6x - 40 = 0

Taking commons,

3x(x+8) -5(x+8) = 0

Taking commons,

(3x-5)(x+8) = 0

saifoo.khan · Answer

lol, online school is very easy!!

anonymous · Answer

thanks so much! not when its the first time youve done it! atleast not for me, im trying to do my best but some of the material is mind boggling to me. glad people like you are out there to help people like me!

saifoo.khan · Answer

are u in online college or in online school?

saifoo.khan · Answer

You welcome! :)

anonymous · Answer

it can be considered either,  its an algebra class, but its my only online class

saifoo.khan · Answer

i do help many online college/school people who are stuck with their math and stuff.. so was just askin'. :)

anonymous · Answer

well im sure i will be going to you for help in the future if you are offering it!

saifoo.khan · Answer

Sure, you can take my email as well.. :)

anonymous · Answer

alrighty thanks

saifoo.khan · Answer

No problem!