Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 - 8x = 15
A. {4 ± 
}
B. {8 ± 
}
C. {4 ± 
}
D. {-4 ± 
}
Answer: A
Mathematics
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Find the center and radius of the circle.x2 + 18x + 81 + y2 + 6y + 9 = 64
A. (3, 9), r = 64 B. (-3, -9), r = 8 C. (-9, -3), r = 8 D. (9, 3), r = 64
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Solve the compound inequality. Express the solution using interval notation or state that there is no solution.x - 2 ? 4 and x - 2 > -1
A. [1, 6) B. (1, 6] C. (-3, 2] D. [-3, 2)
Mathematics
Factor the trinomial.36 - 13x + x2
A. (x - 4)(x - 9) B. (x - 4)(x + 9) C. (x - 36)(x - 1) D. (x + 4)(x + 9)
Mathematics
Graph a line that is perpendicular to the given line and passes through the given point.
A. 
B. 
C. 
D. 
Mathematics