Y equals 5x2 plus 7x - 3?

Answer 1

Y = 5x2 + 7x - 3

use the pq-formula: x2 + px + q

p = 7

q = -3

x = -p/2 +- sqrt( (p/2)2 - q)

x = -7/2 +- sqrt ( (7/2)2 -(-3))

x = -3,5 +- sqrt ((49/4) + 3)

x = -3,5 +- sqrt (12,25 + 3)

x1 = -3,5 + sqrt(15,25)

x2 = -3,5 - sqrt (15,25)