Question

Solve the equation if possible. Give your answers in radical form. 2a^2-200=0

Answer 1

2(a^2 - 100)=0
2(a-10)(a+10)=0
a= -10,10

Answer 2

how did you get -100??

Answer 3

I factored out a 2 from the equation

Answer 4

hang on, i think they are looking for this... drawing

Answer 5

ok