Simplify the expression. Assume that all variables are positive when they appear.
A. -4x4y6
B. 4x4y6
C. -4x6y9
D. 16x4y6
Answer: A
Mathematics
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A. 
B. 
C. 
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Find the dimension of matrix A.  figure 1.png)
What will be an ideal response?
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A. -8xy B. -8x2y2 C. 16xy D. 16x2y2
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