Solve (3+1)² - (4+1): Order of Operations Practice

Order of Operations with Parentheses and Exponents

(3+1)2(4+1)= (3+1)^2-(4+1)=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:05 Let's solve this problem together.
00:08 First, always start by solving the parentheses.
00:12 Next, break down the exponent step by step.
00:15 Remember, multiplication and division come before addition and subtraction.
00:20 And there you go! That's how we find the solution.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

(3+1)2(4+1)= (3+1)^2-(4+1)=

2

Step-by-step solution

To solve the expression (3+1)2(4+1)(3+1)^2-(4+1), we need to apply the order of operations, which is also known as PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right)).

Step 1: Simplify inside the parentheses.
Start with the expression inside the first parentheses: 3+13+1. Adding the numbers gives:
3+1=43+1 = 4.

Step 2: Apply the exponent.
Next, we take the result from step 1 and apply the exponent:
424^2. This equals:
4×4=164 \times 4 = 16.

Step 3: Simplify inside other parentheses.
Now, simplify the expression inside the second set of parentheses: 4+14+1. This gives:
4+1=54+1 = 5.

Step 4: Perform subtraction.
Finally, subtract the result of the second parentheses from the exponent result:
16516 - 5, which equals:
1111.

Thus, the final result of the expression (3+1)2(4+1)(3+1)^2-(4+1) is 11.

3

Final Answer

11

Key Points to Remember

Essential concepts to master this topic
  • PEMDAS Rule: Parentheses first, then exponents, then multiplication/division, finally addition/subtraction
  • Technique: Calculate (3+1)2=42=16 (3+1)^2 = 4^2 = 16 before subtracting
  • Check: Verify each step: 4, then 16, then 5, finally 16-5=11 ✓

Common Mistakes

Avoid these frequent errors
  • Applying exponent before simplifying parentheses
    Don't calculate 32+12=9+1=10 3^2 + 1^2 = 9 + 1 = 10 instead of (3+1)2 (3+1)^2 ! This ignores the grouping symbols and gives 10-5=5 instead of the correct answer 11. Always simplify inside parentheses completely before applying any exponents.

Practice Quiz

Test your knowledge with interactive questions

What is the result of the following equation?

\( 36-4\div2 \)

FAQ

Everything you need to know about this question

Why can't I just work from left to right?

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Mathematics has a specific order that must be followed! Without PEMDAS, 2+3×4 2+3×4 could equal 20 or 14. The agreed order prevents confusion and ensures everyone gets the same answer.

What if there are no parentheses in an expression?

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Then you skip the P in PEMDAS and move to exponents next! For example, in 3×22+1 3×2^2+1 , you'd calculate 22=4 2^2=4 first, then multiply by 3.

Do I always have to write out every single step?

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Yes, especially when learning! Writing each step helps you catch mistakes and shows your teacher that you understand the process. It's like showing your work in any math problem.

What's the difference between 3+12 3+1^2 and (3+1)2 (3+1)^2 ?

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Huge difference! 3+12=3+1=4 3+1^2 = 3+1 = 4 because exponents come before addition. But (3+1)2=42=16 (3+1)^2 = 4^2 = 16 because parentheses force you to add first.

How can I remember the order of operations?

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Try the phrase "Please Excuse My Dear Aunt Sally" for PEMDAS! Or create your own memorable phrase. Practice with simple expressions until it becomes automatic.

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