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The roots of x^4 - 10x^3 + 35x^2 - 50x + 24 = 0 are 1, 2, 3, 4. Find the sum of pairwise products.
A10
B24
C50
D35
Answer & Solution
Correct answer: D. 35
The pairwise product sum equals the coefficient of x^2 with its sign, giving 35, which matches 2+3+4+6+8+12.
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