Find the indicted product and simplify if possible.The expression 9x2 - 18(x - 3)2 - (x - 6)3 was used to determine the stress in a section of metal.
A. -x3 - 21x2 + 180x - 378
B. -x3 - 9x2 + 378
C. -x3 - 303x2 + 36x + 207
D. -x3 + 9x2 + 54
Answer: D
Mathematics
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Add.(6a5 + 9a2) + (3a5 + 2a2)
A. 20a7 B. 9a10 + 11a4 C. 20a14 D. 9a5 + 11a2
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A.
B.
C.
D.
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Find the vertex for the parabola whose equation is given.y = x2 + 7x + 9
A.
B.
C.
D.
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