What are the zeros of the function defined by the polynomial
x^2+7x+12

solve by inspection
[tex]x^2+7x+12\\\\(x+4)(x+3)[/tex]
[tex]x+4=0\\\\x=-4[/tex]
[tex]x+3=0\\\\x=-3[/tex]
The zeros of the function are -4 and -3.