Multiply.( y + 7 )( y - 7)

A. y2 - 14y - 49
B. y2 + 49
C. y2 - 49
D. y2 + 14y + 49


Answer: C

Mathematics

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Graph.81x2 + 9y2  = 729

A.

B.

C.

D.

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How many distinguishable permutations of letters are possible in the word?COMMITTEE

A. 90,720 B. 181,440 C. 45,360 D. 362,880

Mathematics

Factor. - w2

A.  
B.  
C. 2
D. prime

Mathematics

Factor completely. If the polynomial cannot be factored, say it is prime.25x2 - 81

A. (25x + 1)(x - 81)  B. (5x + 9)2 C. (5x - 9)2 D. (5x + 9)(5x - 9) 

Mathematics