Perform the operation and write the result in the standard form.(9 + 9i)(3 - 5i)
A. 72 + 18i
B. -45i2 - 18i + 27
C. 72 - 18i
D. -18 + 72i
Answer: C
Mathematics
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Solve the inequality. Graph the solution set and write it in interval notation.m - 4(m + 6) < 3m
A. (1, ?)
B. (-?, -4)
C. (-4, ?)
D. (-?, 1)
Mathematics
Solve the problem.Use the exact value cos 36° = 
and identities to find the exact value of sin 36°.
A. 
B. 
+ 1
C. 
D. 
Mathematics
Solve by using the quadratic formula.8x2 + 7x = -2
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation. Write the result in the form a + bi.(5 - 5i)(3 + 8i)
A. -25 - 55i B. 55 + 25i C. -40i2 + 25i + 15 D. 55 - 25i
Mathematics