Answer:
I think the an 8..good luck
1) a
2) c
#1 explanation:
x^4-20x^2=-64
x^4-20x^2+64=0
(find a number that multiplies to the last number aka 64 and adds up to b aka 20)
((x-4)(x-16))^2
x= -2,2,-4,4
same for #2 w different variable and numbers
Just use app called Socratic will help out
Probably b. flyer
Of course, it's tough to tell without the selection.
