In how many points will the graph X^2+8x+15 intersect X- axis ? Why?
Answers
Answered by
7
We already know how to find where the graph of f(x) cuts the x−axis. That’s where y = 0. We calculate it by solving the equation f(x) = 0 .
Attachments:
Anonymous:
@sargam, shall i report ur answer?
y u reported my answer??
I haven't report ur answer.
so who did this
nd someone reported ur answer too
i don't know... be patient I won't be deleted
hmm
Fine! Have a nyc tym. bye
Answered by
8
Heya!!
1) If Descrimnant comes out > 0 then the graph will intersect x-axis at two different points.
2) if Descrimnant comes out = 0 then the will touch x-axis at one point.
3) if Descrimnant cones out < 0 then the graph won't touch x-axis.
Exp:-
It's Descrimnant is = (8)²-4(1)(15)
= 64 - 60 = +4
Descrimnant comes out +ive So, the will intersect x-axis at two different points.
Have a nice day ahead.
1) If Descrimnant comes out > 0 then the graph will intersect x-axis at two different points.
2) if Descrimnant comes out = 0 then the will touch x-axis at one point.
3) if Descrimnant cones out < 0 then the graph won't touch x-axis.
Exp:-
It's Descrimnant is = (8)²-4(1)(15)
= 64 - 60 = +4
Descrimnant comes out +ive So, the will intersect x-axis at two different points.
Have a nice day ahead.
Similar questions