Complete the square.
can you show how , i'm lost
x^2 + 20x - 4y + 100 = 0

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.