B Evaluate Each Algebraic Expression For The Given Value Of The Variable. Show Your Complete Solutio
B Evaluate each algebraic expression for the given value of the variable. Show your complete Solution
Example: 16 - x When x=5
Solution:16 - 5 = 11
1. 3n when n= 11
2. xy - 5 when x = 5, y = 2
3. p3 when p = 2
4. r + s2 when r = 4, s = 1
5. C2/d when c= 6, d = 3
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B. Evaluate each algebraic expression for the given value of the variable. Show your complete solution.
Example: 16 - x When x=5
Solution: 16 - 5 = 11
Answer:
1. 3n when n= 11 → 33
2. xy - 5 when x = 5, y = 2 → 5
3. p³ when p = 2 → 8
4. r + s² when r = 4, s = 1 → 5
5. c²/d when c= 6, d = 3 → 12
Solution:
#USING SUBSTITUTION METHOD#
1. 3n when n= 11
= 3n
= 3(11)
= 33
2. xy - 5 when x = 5, y = 2
= (5)(2)-5
= (10)-5
= 5
3. p³ when p = 2
= p³
= (2)³
= 8
4. r + s² when r = 4, s = 1
= r + s²
= (4) + (1)²
= (4) + (1)
= 5
5. c²/d when c= 6, d = 3
= c²/d
= (6)²/3
= (36)/3
= 12
Dont Forget To Take Note:
- The substitution method includes presenting a system of algebraic equations in terms of only one variable.
- The substitution method to solve algebraic equations is a strategy for compressing a system of linear equations through defining one variable in terms of another and therefore eliminating one variable from the equation.
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