Question

what number is used to complete the square for the equation y^2 + 16 = -y?

a).-25
b).25
c)-64
d)64

a

Answer 1

no i meant b

Answer 2

What does it take in the ___ space to make
y^2 + y + __ a perfect square?

Think of the general expression
ay^2 + by + c.

When a = 1, square half the "b" term to get the c that makes it a perfect square (y + b/2)^2 = y^2 + by + b^2/4

You need to learn to do this yourself.

Answer 3

Yes, 1/4 is the answer

Answer 4

thanks drwls