Mathematics, 03.01.2021 16:10, mlguerrero12

5 Thus, when
- 2. the expression is equal to 3/5.
Illustrative Example 2:
Evaluate the expression
Sx246x-11
when x= 2.
Solution:
Step 1: Replace the variable x with the given value.
5x24 6x-11 5(2)2 +6(2)-11
(by substituting x=2)
Step 2: Simplify the numerator and the denominator.
5(2)2 + 6(2) - 11
5(4) + 6(2) - 11
1
1
20 + 12-11
1
21
T
21
Thus, when x = 2, the expression
5x+63-11
is equal to 21.
Try applying rational algebraic expression in real-life situation. Consider these illustrative examples
Illustrative Example 1:
Vannessa can finish writing a module in x hours, while his brother Ryan can finish writing the
same module in y hours. Write an expression that will illustrate their rate of work to finish writing the
module.
This can be illustrated using a table:
Time (in hours)
part of work
hour
1
Vannessa
X
1
Ryan
у
y

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5 Thus, when
- 2. the expression is equal to 3/5.
Illustrative Example 2:
Evaluate t...