Match each expression to its equivalent standard form.(match with either 1,2 or 3)
x2 - 4x - 4
x2 - 4x + 8
x2 + 16
x2 + x + 2
x2 + 4
x2 + 2x + 2

1) (x-2+2i)(x-2-2i)

2) (x+2i)(x-2i)

3) (x+1+i)(x+1-i)

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

just keep asking questions until you have a better understanding.

step-by-step explanation:

a

step-by-step explanation:

the denominator cannot be the same as one of the factors.

8 denominator times 2 denominator = 16

and 7 numerator time 11 = 77

77/16= 77/16 ( they cannot be further simplified)

step-by-step explanation: