consider this quadratic equation x2+2x+7=21 the nuber of positive solutions to this equation are blank. the approximate value of the greatest solution to the equation, rounded to the nearest hundredth, is blank.​

x²+2x+7-21=0

x²+2x-14. =0

x²+2x. =14

x²+2x+1. =14+1

(X+1)².=15

X+1.=+/-√15

X=-1+/-√15

X=-1+3.872983346207

=2.872983346207(greatest solution) round it as possible

X=-1-3.872983346207

=-4.872983346207

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

this answer is !