The quadratic formula is the result of completing the square for ax^2+bx+c=0 when a,b, and c are unknown values. This result is:
x=(-b±√(b^2-4ac))/(2a), we have x^2-x-2=0 so
x=(1±√(1+8))/2
x=(1±√9)/2
x=(1±3)/2
x=-1 and 2
Answer:
step 3
Step-by-step explanation:
take away 2 add 4 then multiple 9000 then divide 1 then you got your answer 20/56.
There’s no attachment, i can try to help tho what does the problem look like
I hope it helped youuuuuu
