Multiply.
? 
A. -90
B. -90i
C. 90
D. 90i
Answer: A
Mathematics
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Solve the quadratic inequality. Write the solution set in interval notation.x2 - 7x + 10 > 0
A. (2, 5) B. (-?, 2) ? (5, ?) C. (5, ?) D. (-?, 2)
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Use the unit circle to determine the value of the given expression or state that it is undefined.csc 
A. - 
B. - 
C. - 
D. - 
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Find the product.(5x + 6y)(5x - 6y)
A. 25x2 + 60xy - 36y2 B. 5x2 - 6y2 C. 25x2 - 60xy - 36y2 D. 25x2 - 36y2
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Evaluate the algebraic expression for the given values of the variables.5y(4z - x) for x = 9, y = 3, and z = 6
A. 225 B. 351 C. 75 D. 180
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