Answer:
x=5, -1
Step-by-step explanation:
I think you mean 2x^2-8x-10=0
2x^2-8x-10=0
Factor out a 2 (0/2 is still 0)
2(x^2-4x-5)=0
Divide by 2
x^2-4x-5=0
Find something that MULTIPLIES to get -5 and ADDS up to get -4, then factor
(x-5)(x+1)=0
Make each set =0
x-5=0
x+1=0
x=5, -1
