What equation results from completing the square and then factoring?
x2 - 8x = 39
o a. (x-8)2 = 55
o b. (x-8)2 = 23
o c. (x-4)2 = 23
o d. (x-4)2 = 55

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota