Answer:
1. (-10,10)
2.(-6,6)
3.(-7,7)
4.(-8,8)
5.(0,4)
Step-by-step explanation:
1.
x^2 - 100
(x+10)(x-10)
set equal to zero
x+10 = 0 x-10 = 0
x = -10 x= 10
do that for 1-4
5.
-36x = -9x^2
add your -9x^2
9x^2 - 36x = 0
take out 9x
9x(x-4)
set equal to zero
9x = 0 x-4=0
0 and 4
