Factor the trinomial completely. If the polynomial cannot be factored, write "prime."x2(y - 10) - 19x(y - 10) + 90(y - 10)
A. (x - 10)(x - 9)(y - 10)
B. (x + 10)(x + 9)(y - 10)
C. (x + 10)(x - 9)(y - 10)
D. (x - 10)(x + 9)(y - 10)
Answer: A
Mathematics
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A. 126 B. 138 C. 147 D. -78
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A. 9m - 9 + 
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C. 9m + 9
D. 9m - 9
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