Multiply and simplify.-6z ? 
A. 0
B. 36z
C. 1
D. -1
Answer: C
Mathematics
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Write the expression in the standard form a + bi.
A. 1 + i B. -1 + i C. -1 - i D. -1 + 2i
Mathematics
Evaluate the expression.(f ? f)(2) when f(x) = 2x + 5 and g(x) = 3x2 - 2
A. 23 B. 19 C. 9 D. -7
Mathematics
Decide whether the matrices are inverses of each other. (Check to see if their product is the identity matrix I.)
and 
A. Yes B. No
Mathematics
Perform the operation indicated. Simplify.
- 
A. - 
B. 
C. 
D. - 
Mathematics