Question

solve+using+formula+x2-4x-8=0

Answer 1

Well I am not sure what you want to say because the question is not clear

Answer 2

Answer:-

4+4√3 or 4-4√3

Step-by-step explanation:- -b+/-√b2-4ac

-(-4) +/-√(-4) 2-4(1) (-8)

4+/-√16+32

4+/-√48

4+/-√16×3

4+/-4√3

Therefore:-

4+4√3 or 4-4√3