Factor by grouping.15x2 - 9x - 20x + 12
A. (3x - 4)(5x - 3)
B. (15x - 4)(x - 3)
C. (3x + 4)(5x + 3)
D. (15x + 4)(x + 3)
Answer: A
Mathematics
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÷ 
A. - 
B. - 
C. - 
D. 
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Find the perimeter of the polygon.
A. 360 m B. 48 m C. 90 m D. 36 m
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