Digital SAT Math Practice Question #2534
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Geometry & Trig Rule: Always sketch the triangle or circle and check for standard Pythagorean triples (3-4-5, 5-12-13, 7-24-25, 8-15-17).
Complete the square: $(x^2 - 6x + 9) + (y^2 + 8y + 16) = 9 + 16 = 25$. So $(x - 3)^2 + (y + 4)^2 = 25$. The radius is $\sqrt{25} = 5$....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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