During a study testing a new vaccine drug for Zika virus the research team grouped volunteers enrolled for the test into Group A and Group B Group A received an inert drug (placebo) while group B received the vaccine. What is the experimental factor

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step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

answer: im sorry i dont get it

step-by-step explanation: