Let's solve each of these problems step by step using the
Exponent Product Rule, which states:
>
When multiplying powers with the same base, add the exponents:
> $$
> a^m \cdot a^n = a^{m+n}
> $$
---
1. Simplify: $ x^4 (x^{12}) $
We are multiplying two powers of $ x $:
$$
x^4 \cdot x^{12} = x^{4+12} = x^{16}
$$
✔ Answer: D) $ x^{16} $
---
2. Simplify: $ 3^5 \cdot 3^7 $
Same base (3), so add exponents:
$$
3^5 \cdot 3^7 = 3^{5+7} = 3^{12}
$$
✔ Answer: C) $ 3^{12} $
---
3. Simplify: $ n^2 \cdot n^4 $
Same base ($ n $), add exponents:
$$
n^2 \cdot n^4 = n^{2+4} = n^6
$$
✔ Answer: A) $ n^6 $
---
4. Simplify: $ 5^2 \cdot 5 $
Note: $ 5 $ is the same as $ 5^1 $
So:
$$
5^2 \cdot 5^1 = 5^{2+1} = 5^3
$$
✔ Answer: A) $ 5^3 $
---
5. Simplify: $ c^4 \cdot c^3 $
Same base ($ c $), add exponents:
$$
c^4 \cdot c^3 = c^{4+3} = c^7
$$
✔ Answer: B) $ c^7 $
---
✔ Final Answers:
1.
D
2.
C
3.
A
4.
A
5.
B
Let me know if you'd like help with the rest of the 20 questions!
Parent Tip: Review the logic above to help your child master the concept of exponents product rule worksheet.