solve the polynomial and graph the solution set on a real number line. Express the solution set in interval notation x^2+5x+40

Question

solve the polynomial and graph the solution set on a real number line. Express the solution set in interval notation x^2+5x+4>0

anonymous · Answer

(x+4)*(x+1)>0
can you pick up from here?

anonymous · Answer

(X+1)(X+4)>0

X+1>0  AND X+4 >0

anonymous · Answer

x>-4
x>-1
will give you x>-1 (first solution)

anonymous · Answer

x<-1
x<-4
will give x<-4
second interval

anonymous · Answer

so, you have 2 intervals, right?
x<-4  & x>-1

can you put it in interval notation?

anonymous · Answer

how to put it on the number line

anonymous · Answer

(-infinity,-4) & (-1,+infinity)

anonymous · Answer

draw the line:

+++++++(-4)--------(-1)+++++++++

where is +++ solid line (numbers included), put the hole in (-4) & (-1) & resume the solid line from (-1) to the right (+infinity)

Good?