Answer:
x = 3 and x = -7
Step-by-step explanation:
The given quadratic equation is
. We need to find the solution of this equation.
If the equation is in the form of
, then its solutions are given by :

Here, a = 1, b = 4 and c = -21
Plugging all the values in the value of x, such that :

So, the solutions of the quadratic equation are 3 and -7.
Answer: I got 32
Step-by-step explanation:
I got 32
(I'm guessing you mean ton)
10 ton = 20,000 pounds
Evaluate
at
:

Compute the line element
:

Simplifying the integrand, we have

Then the line integral evaluates to

The second and third one are correct