r^2-798r-1600=

Solution for r^2-798r-1600= equation:

Simplifying
r2 + -798r + -1600 = 0

Reorder the terms:
-1600 + -798r + r2 = 0

Solving
-1600 + -798r + r2 = 0

Solving for variable 'r'.

Factor a trinomial.
(-2 + -1r)(800 + -1r) = 0

Subproblem 1
Set the factor '(-2 + -1r)' equal to zero and attempt to solve:

Simplifying
-2 + -1r = 0

Solving
-2 + -1r = 0

Move all terms containing r to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + -1r = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -1r = 0 + 2
-1r = 0 + 2

Combine like terms: 0 + 2 = 2
-1r = 2

Divide each side by '-1'.
r = -2

Simplifying
r = -2
Subproblem 2
Set the factor '(800 + -1r)' equal to zero and attempt to solve:

Simplifying
800 + -1r = 0

Solving
800 + -1r = 0

Move all terms containing r to the left, all other terms to the right.

Add '-800' to each side of the equation.
800 + -800 + -1r = 0 + -800

Combine like terms: 800 + -800 = 0
0 + -1r = 0 + -800
-1r = 0 + -800

Combine like terms: 0 + -800 = -800
-1r = -800

Divide each side by '-1'.
r = 800

Simplifying
r = 800
Solution
r = {-2, 800}