Select a set of values for n. Usually, n takes the values 1, 2, 3, 4, ...
In each case, calculate 4 times the value of n and then add 3. Each n and the associated value for 4n+3 form a row/column of the table.
If you want to ask questions about the "following", then I suggest that you make sure that there is something that is following.
The sum of the given expression would depend on the values of the variables which have not been given.
It is a algebraic expression which can be simplified depending on the plus or minus values of 3n and 10n which have not been given.
There are none because the discriminant of the given quadratic expression is less than zero.
x2 + 3x - 5 is an expression, not an equation. An equation may have roots, an expression does not. However, x2 + 3x - 5 = 0 is an equation and its roots are -4.1926 and 1.1926 (approx).
If you want to ask questions about the "following", then I suggest that you make sure that there is something that is following.
The value of a + b depends on the values of the individual variables.The expression a + b cannot be simplified.
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The value of such an expression depends on the values assigned to the variables, in this case, x and c.
The sum of the given expression would depend on the values of the variables which have not been given.
The variables have no known values and as an expression it is: 5x+9y+5
The answer depends on the domain - the set of values that x can take..
It is, in fact, an identity - which is an equation which is true for all values of the variable.
If you're looking to factor this expression, then you need to find two values that add up -20, and which multiply to make 4. Unfortunately, no such terms exist, so this expression can not be factored.
They are two terms of an algebraic expression which can be arranged as : y-2a
The expression X/(X+8) is undefined at X=-8, because that would be division by zero.
It is a algebraic expression which can be simplified depending on the plus or minus values of 3n and 10n which have not been given.