Answer:
x = 0.58 or x = -8.58 to 2 d.p.
Step-by-step explanation:
Question:
Just to write the question in a better format :
Solve for x.
Answer:
First we Simplify this by dividing everything by 2:
÷ 2 :

Now we use the quadratic formula :
(side note: +/- is meant to be ±)
Now we substitute a with 1, b with +8 and c with -5:
The surd
= 2
So :
x = -8± 2√21 /2
x = -4 ±√21
This is our answer . Remember it is two answers in 1.
x = -4 +√21 and x = -4 -√21
x = 0.58257569495 or x = -8.58257569496
x = 0.58 or x = -8.58 to 2 d.p.
Hope this helped and brainliest please