Answer:
1) 3[tex]x^{2}[/tex]-19x-14
2) [tex]x^{2}[/tex]-x-6
3) [tex]x^{2}[/tex]-8x+16
Step-by-step explanation:
You can use the box method for each of these problems. Or you can use the "FOIL" method. I'll do one example problem for the FOIL method
For the last problem, expand the equation by writing
(x-4)(x-4)
Now you can FOIL the two values
First: x · x= [tex]x^{2}[/tex]
Outside: x · -4= -4x
Inside: -4 · x= -4x
Last: -4 · -4= 16
Now put all these values together
[tex]x^{2}[/tex]-4x-4x=16
Now we can combine like terms ( -4x and -4x) to get -8x which we will put back into the equation
So we get
[tex]x^{2}[/tex]-8x+16 which is your answer
You can use this method anytime you are multiplying polynomials.
