Find first four terms of the indicated expansion by use of the binomial series.(1 + x)-2
A. 1 - 2x + 3x2 - 4x3 + . . .
B. 1 - 2x - 3x2 - 4x3 - . . .
C. 1 + 2x + 3x2 + 4x3 + . . .
D. 1 - 2x + 3x2 - 8x3 + . . .
Answer: A
Mathematics
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Graph the system of inequalities.x + 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Mathematics
A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given.P = 2L + 2W; P = 16, W = 2
A. 8 B. 6 C. 7 D. 14
Mathematics
Find the difference.
- 
A. 2
B. 
C. 
D. 1
Mathematics
Find the inverse, if it exists, for the matrix.
A. 
B. 
C. The inverse does not exist.
D. 
Mathematics