Perform the indicated operation and simplify. Write the answer in the form a + bi.(5 - 8i)2
A. -39
B. 10 - 16i
C. -39 - 80i
D. 25 + 64i
Answer: C
Mathematics
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Simplify the expression. Assume that all variables are positive.(x6y9)1/3
A. x18y27 B. x3y2 C. x2y3 D. 3x6y9
Mathematics
Find the determinant of the matrix and determine if the matrix is invertible 
?
What will be an ideal response?
Mathematics
Simplify the expression by combining like terms.2x - 7x - x
A. -6x B. -4x C. -5x - x D. -5x
Mathematics
Solve the problem.Mrs. Campbell prepared her grocery list at home. Her list contained the following items with their sale prices: cheese - 
soda - 
; hamburger - 
; and gum - 
. She bought all of the items at the store except
the crackers. How much money did she spend? A. $24.64 B. $23.77 C. $23.64 D. $22.77
Mathematics