Find the conjugate of the complex number. Then multiply the complex number by its conjugate.8 - 5i

A. 13; 89
B. 3; 89
C. 8 - 5i; 89
D. 8 + 5i; 89


Answer: D

Mathematics

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Multiply, and then simplify if possible. Assume all variables represent positive real numbers.2

A. 3x - 10 + 23
B. 3x + 25 + 25
C. 3x + 25 + 23
D. 3x - 10 + 25

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Solve the equation graphically by finding x-intercepts.x2 - x - 5 = 0

A. x = -2.79 or x = 1.79 B. x = 0 or x = 1 C. x = -1.79 or x = 2.79 D. x = -2.29 or x = 2.29

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Find the exact value by using a half-angle identity.sin 

A.   
B. -  
C. -  
D.  

Mathematics