Mark M. answered • 08/07/19
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
x2 + 7x + 12 = 0
(x + 3)(x + 4) = 0
x ∈ {x | x = -3, x = -4}
Heather P.
tutor
That’s just set notation. You typically don’t see the answer written that way. You’ve probably seen it as x=-3,-4 or (-3,0),(-4,0), since they represent points on a graph.
Report
08/08/19
Milica J.
What's ∈? Why did you put | in the brackets? What is {x | x = -3, x = -4}?08/08/19