Mathematics · Algebra
If X = a2 - b2, Y = 30, and a + b = 15, then which of the following statements is definitely correct?
- 1X is equal to Y if a - b = 2
- 2Y is greater than X if a = b✓
- 3X is greater than Y if a > b
- 4X is less than Y if a < b
Correct answer
Y is greater than X if a = b
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