Simplify the expression.(-7x4y)(8x5y9)
A. -56x20y9
B. -56x9y10
C. 56x9y8
D. 56x20y9
Answer: B
Mathematics
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A. Yes B. No
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A. 23
B. -33
C. -23
D. - 
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Solve the equation.log2(3x + 8) = log2(3x + 3)
A. {5}
B. 
C. {0}
D. ?
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Evaluate.i25 + i31
A. 0i B. 0 C. -2 D. 2
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