What two 1-digit factors could you multiply to get a product between and including 40 and 50?

8*5=40
5*10=50
6*8=48
7*6=42
7*7=49
8*6=48
9*5=45

Hope this helps!

9x5=45
8x5=40
8x6=48
7x6=42
5x10=50
7x7=49
Hope that helps!!

X^2 - 4x +(4/2^2) + y^2 + 8y + (8/2^2) = -4 + (4/2^2) + (8/2^2)(x + 2)^2 + (y + 4)^2 = -4 + 4 + 16your center is (-2, -4) and the radius is the sqrt of -4 + 4 + 16 which is 4