What number is used to complete the square for the equation y^2 + 16 = -y?
a) 64
b)-.25
c) .25
d) -64
a
y^2 + 16 = -y?
1y^2 +1 y = -16
(1/2)^2 = 1/4 = .25 {so c}
y^2 + y + .25 = -16+.25 = -15.75
(y+.5)^2 = -15.75
a) 64
b)-.25
c) .25
d) -64
a
1y^2 +1 y = -16
(1/2)^2 = 1/4 = .25 {so c}
y^2 + y + .25 = -16+.25 = -15.75
(y+.5)^2 = -15.75