Solve the equation using the zero product property.-9(x - 9)(x + 5) = 0
A. {-9, 5}
B. {-9, 9, -5}
C. {9, 5}
D. {9, -5}
Answer: D
Mathematics
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Simplify the expression. Write the result using positive exponents only.-5-4
A. 625
B. -625
C. 
D. - 
Mathematics
Use sum-to-product identities to rewrite the expression as a product.cos 39° - cos 57°
A. -2 cos 48° cos 9° B. 2 sin 48° cos 9° C. -2 sin 48° sin 9° D. 2 sin 48° sin 9°
Mathematics
Use the factor theorem to decide whether or not the second polynomial is a factor of the first.5x4 + 11x3 - 2x2 + x + 4; x + 2
A. Yes B. No
Mathematics
Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation.x2 - 14x + 49 > 0
A. (7, ?)
B. (-?, 7) ? (7, ?)
C. (-?, 7)
D. (-?, ?)
Mathematics