## anonymous 3 years ago Special Quadratic Equation I don't understand them

1. hartnn

which equation ?

2. hartnn

can u be more specific ?

3. anonymous

x^2-64=0 i have to find out another way to make it true

4. hartnn

whats the first way ?

5. anonymous

x= -b(-+)(square route)b (squared )- 4 ac (divided by a)

6. anonymous

8^2-64=0

7. hartnn

x^2-64 =0 you can take 64 to other side x^2 =64 then take square root on both side, what u get ?

8. anonymous

I dont understand..

9. anonymous

$x = -b \pm \sqrt{?} ^{b}-4ac \ \div 2a$

10. anonymous

thats the quodratic equation