Asap 25 pts + brainliest to right/best answer

A

Step-by-step explanation:

given

16x² + 4 = 0 ( subtract 4 from both sides )

16x² = - 4 ( divide both sides by 16 )

x² = = -

[ take the square root of both sides ]

x = ± = ± i ( = i )

x = ±1/2 i

Step-by-step explanation:

16x^2 +4 = 0

Subtract 4 from each side

16x^2 +4-4 = 0-4

16x^2 = -4

Divide by 16

16x^2/16 = -4/16

x^2 = -1/4

Take the square root of each side

sqrt(x^2) = sqrt(-1/4)

sqrt(ab) sqrt(a) sqrt(b)

x = ±sqrt(1/4) sqrt(-1)

x = ±1/2 i

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4