Answer:
The equation is equal to
[tex]x^{2}=2x+8[/tex]
Step-by-step explanation:
Let
x -----> the number
we know that
The equation that represented the problem is equal to
[tex]x^{2}=2x+8[/tex]
[tex]x^{2}-2x-8=0[/tex]
Solve the quadratic equation by graphing
The solution are x=-2 and x=4
see the attached figure
therefore
The number can be -2 or 4
