Find the Factoring X-Box way - where a=1

*help please*

when describing square and x thing (idk what it's called), l=left r=right t=top b=bottom

3. a= 1 b=8 c=16

square:

tl=x^2

tr=4x

bl=4x

br= 16

criss cross thing:

t=16

l=4

b=8

r=4

answer= (x+4)^2

ex 4:

a= 1 b=-7 c=-30

square:

tl=x^2

tr= 3x

bl= -10x

br= -30

criss cross thing:

t=-30

l= 3

b= -10

r=-7

answer= (x+3) (x-10)

ex 5:

a= 1 b=-1 c=-30

square:

tl=x^2

tr=5x

bl=-6x

br= -30

criss cross thing:

t=-30

l=5

b=-1

r=-6

answer= (x+5) (x-6)

Step-by-step explanation:

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x