Question

I need help finding out -3mn+4m-3 (m=2 and n=-4)

Answer 1

Hello!

Explanation:

Lets assume that there is some function f(x) = (x+m)^2+n try to find suitable values for m and n. Expanding this form we would get f(x) = x^2 + 2*m*x + m^2 + n. From the orignal formula we were given it should be obvious that m can only equal 1. So f(x) = x^2 + 2*x + 1 + n must imply that n =4.

Happy to Help From: Corrupted Jason!

Answer 2

29

Explanation:

-3 x 2 x -4 + 4 x 2 -3

Starting from left to right -3 x 2 = -6

and -6 x -4 is 24.

24 + 4 x 2 -3

So, now we can do 4 x 2 which is 8.

24 + 8 -3

And 8 minus 3 is 5 so all we have left would be,

24 +5 = 29

Hope that helps and have a great day!