I hope this helps you
(-2x^2). (-5x^2)+(-2x^2)(4x^3)
10x^4-8x^5
We can’t click on the link maybe take a pic
Replace x with π/2 - x to get the equivalent integral

but the integrand is even, so this is really just

Substitute x = 1/2 arccot(u/2), which transforms the integral to

There are lots of ways to compute this. What I did was to consider the complex contour integral

where γ is a semicircle in the complex plane with its diameter joining (-R, 0) and (R, 0) on the real axis. A bound for the integral over the arc of the circle is estimated to be

which vanishes as R goes to ∞. Then by the residue theorem, we have in the limit

and it follows that

Answer:
-30
Step-by-step explanation:
I'm assuming the equation is
. If it is not please tell me.
If we know the values of m and n, we can just substitute inside the expression.

Hope this helped!
The answer is 30
You multiply 2 x 30 which is 60 and 60 + 30 = 90
hope this helps :D