Multiply using a special product formula.
A. x2 - 25y2
B. x2 + 25xy - 6y2
C. x2 - 
y2
D. x2 - 25xy - 6y2
Answer: C
Mathematics
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Simplify the complex number to its rectangular form.3 + 
A. 3 + 2j B. 3 + 4j C. 3 - 2j D. 1j
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Remove or add parentheses as indicated.Place parentheses to make the equation 
true.
A. 
B. 
C. 
D. 
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Solve.9x4 - 13x2 + 4 = 0
A. ±1, ± 
B. ± 
C. ± 
D. ±1, ± 
Mathematics
Find the direction angles of the vector. Round to the nearest degree, if necessary.v = -2i - 3j + 6k
A. ? = 108°, ? = 118°, ? = 38° B. ? = 104°, ? = 112°, ? = 41° C. ? = 92°, ? = 94°, ? = 83° D. ? = 107°, ? = 115°, ? = 31°
Mathematics