Simplify the expression by performing the indicated operations.9
+ 5
? 
A. 18
+ 128
B. 28
C. 28
D. 18
+ 128
Answer: C
Mathematics
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Add or subtract as indicated. Express the answer as a single polynomial in standard form.(2x2 + 19x - 10) - (4x2 - 3x + 19)
A. -2x2 + 22x - 29 B. -2x2 + 23x + 9 C. -2x2 + 22x + 29 D. -2x2 + 22x + 9
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Solve.The sum of a number and its square is 20. Find the number.
A. 4 or -5 B. -4 or -5 C. 4 or 5 D. -4 or 5
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Write the power of i as i, -1, -i, or 1.i5
A. i B. 1 C. -i D. -1
Mathematics