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- Check operation order.
- Cancel common factors.
- Use divisibility/remainder rules where applicable.
Correct Answer: C
Correct Answer: C
Method / Topic: Simplification
The answer follows the correct operation order or number rule.
Short Explanation
Detailed Explanation
Correct Answer: C
Method / Topic: Simplification
Apply the identity a²-b²=(a-b)(a+b). Substituting 15 and 9 gives 6×24=144.
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Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Check operation order.
- Cancel common factors.
- Use divisibility/remainder rules where applicable.
Find the value of 15² - 9².
Explanation
Correct Answer: C
Method / Topic: Simplification
The answer follows the correct operation order or number rule.
Short Explanation
Detailed Explanation
Correct Answer: C
Method / Topic: Simplification
Apply the identity a²-b²=(a-b)(a+b). Substituting 15 and 9 gives 6×24=144.
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