Multiplying a Binomial by a Trinomial Using a Table Try it
Drag each tile to the table to multiply each row heading by
each column heading
-990
11d2
4d
36
2d3
18d2
2d2
11d
-4
d
9
O Incorrect

54/3 is 18 so 18 is your answer

(a) x intercepts: -6 and 2

you can obtain these by solving the equation 0=x^2 +4x-12 using your favorite quadratic formula. but it is easy to verify -6 and 2 indeed satisfy this equation.

(b) y intercept: -12

this is obtained by setting x=0: 0^2+4*0-12 = -12

(c) the minimum value is: -16 (this is the vertex)

you can get the vertex by rewriting the equation into the form:

there is no global or local maximum as the function goes to infinity, so only in the limit sense: +infinity.