Rewrite the equation by completing the square.
x2 + 3x – 28 = 0
(x +
)2 =

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Problem 2. find the exact value of the remaining trigonometric functions. sketch theangle 8 for each problem. (3 points each)(a) tan 0 =o is in quadrant 2