10/x^2 - 3x - 10 (x=2)
Select the correct choice below
(a) For x = 2 The expression 10/x^2 - 3x - 10=?
(b) For the expression 10/x^2 - 3x - 10 is undefined.
10/x^2 - 3x - 10 (x=2)
Select the correct choice below
(a) For x = 2 The expression 10/x^2 - 3x - 10=?
(b) For the expression 10/x^2 - 3x - 10 is undefined.
We can test if it is possible to evaluate an expression for a given value of a variable by substituting the value into the expression and attempting to find the answer.
If the variable causes a denominator to equal zero, then the expression is undefined for the variable.
If we substitute 2 for x we get:
10/2^{2} - 3(2) - 10
10/4 - 6 - 10
5/2 - 16
-27/2
It is possible to evaluate the expression for x = 2. The expression equals -27/2 when x = 2.