Multiply.(x - 6y)(x - 12y)
A. x2 - 18xy - 18y2
B. x2 - 21xy + 72y2
C. x2 - 18xy + 72y2
D. x - 18xy + 72y
Answer: C
Mathematics
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Write the number in decimal notation. ? Gross domestic product of the United States in 2007: 1.3743021 × 1013 dollars ?
A. $13,743,021,000,000 B. $1,374,302,100,000 C. $13,743,021,000 D. $137,430,210,000 E. $137,430,210,000,000
Mathematics
The following question(s) refer to a fractal defined by the recursive procedure :
How many square units of area are added above the original horizontal line segment at step 1 of the construction?
A. 1 B. 4 C. 3 D. 2 E. none of these
Mathematics
Find the values of x such that the vectors (2x,x,5) and (4,x,3) are orthogonal.
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Mathematics
Find the exact value of the expression.sec-1(-2)
A. - 
B. - 
C. 
D. 
Mathematics