Solve for x in the equation x2 + 4x- 4=8

x=2,-6

Step-by-step explanation:

x2+4x−4−8=8−8

x2+4x−12=0

(x−2)(x+6)=0

x−2=0 or x+6=0

x=2 or x=−6

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s