
Step-by-step explanation:
The given equation is 
Let
be the coefficient of 
Let
be the coefficient of 
Let
be the constant.
Then the roots α,β for the equation
are 
So,α=
β=
.
So the roots are 
Answer:
<h3>
x = 5 units</h3>
Step-by-step explanation:
area of a triangle = 1/2 base * height
where area = 10 units²
height = x units
base = 4
<u>plugin values into the formula:</u>
10 = 1/2 * 4 * x
x =<u> 10 (2) </u>
4
x = 5 units
80% = 6 in
100%=?
100/x 80/6 (proportional relationship)
then cross multiply
600 = 80x
600/80= 7.5
x=7.5