Factor completely.x2 - 14x + 49
A. (x + 7)2
B. (x - 7)2
C. (x - 7)(x + 7)
D. (x + 49)(x + 1)
Answer: B
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Solve the equation.
= 
A. {3} B. {-3} C. {-3, 3} D. ?
Solve the equation by the method of your choice. Simplify solutions, if possible.x2 + 10x = -13
A. {-5 ± 2
}
B. {2
± 5}
C. {±2
}
D. {-5 ± 2
}
Find the exact value of the trigonometric expression without the use of a calculator.If cos ? = - 
, 
< ? < ? and sin ? = - 
, ? < ? < 
, find the exact value of cos (? + ?).
A. 
B. 
C. 
D. 
Solve. A furniture store sells two sizes of cube-shaped stackable storage cabinets. The interior storage space of the smaller cube is x in. by x in. by x in. The interior storage space of the larger cube is y in. by y in. by in. Write an expression, in factored form, that shows the amount that the storage space of the larger cube exceeds the storage space of the smaller cube.
A. (y - x)(y2 - yx + x2) B. (x - y)(x2 + xy + y2) C. (y - x)(y2 + yx + x2) D. (y + x)(y2 - yx + x2)