I just solved this one
anothe way is undistribute the 2 first and move -14 to side
2(x^2+6x)-14=0
comlete the squer inside and add negative
2(x^2+6x+9-9)-14=0
factor perfect square
2((x+3)^2-9)-14=0
distribute
2(x+3)^2-18-14=0
2(x+3)^2-32=0
add 32 both sides
2(x+3)^2=32
divide 2
(x+3)^2=16
sqrt both sides
x+3=+/-4
minus 3
x=-4-3 or 4-3
x=1 or -7
answer is C
Answer: 78 and 80
Step-by-step explanation:
x + (x + 2) = 158
2x + 2 = 158
-2 -2
2x = 156; divide both sides by 2, and you get x = 78
If x = 78, then x + 2 = 80
Answer:
1680 vehicles
Step-by-step explanation:
28 per minute
60 minutes in an hour
28 * 60 = 1680
