The first few steps in deriving the quadratic formula are
shown.
Which best explains why
is not added to the left side of
-c-ax
+bx
the equation in the last step shown in the table?
Use the subtraction property of
equality
Factor out a
The term
is added to the right side of the equation,
Find half of the b value and square
it to determine the constant of the
perfect square trinomial.
so it needs to be subtracted from the left side of the
equation to balance the sides of the equation.
The distributive property needs to be applied to determine
the value to add to the left side of the equation to balance
the sides of the equation.
The term
needs to be converted so it has a common
denominator before adding it to the left side of the equation
to balance the equation.
The square root of the term needs to be found before
adding the term to the left side of the equation to balance

60

step-by-step explanation:

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

step-by-step explanation:

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