Advanced MathEasy–MediumProduct of the two square roots
Advanced Math practice question
The equation x² − 25 = 0 has two solutions. What is the product of the two solutions?
Answer: -25 or −25
The solutions are 5 and −5. Their product is −25.
Common wrong answers
- If you answered 0
- 0 is the SUM of the solutions (5 + (−5)).
- If you answered 25
- 25 is 5 × 5, forgetting that one solution is negative.
- If you answered -5
- −5 is one of the solutions, not the product.
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For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
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