<PRE><B>Question 65048</B>
1) Factor out the GCF: 6xy - 9yz + 15xz 
GCF is 3
Factor form: 3(2xy-3yz+5xa)
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2) Factor by grouping: 2x^2 + 10x - 3x - 15 
2x(x+5)-3(x+5)
(x+5)(2x-3)
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3) Factor completely: 3a^2 - 27b^2
3(a^2-9b^2
=3(a-3b)(a+3b)
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4) Factor completely: 15x^2 + 7x - 2
(5x-1)(3x+2)
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5) Factor completely: 9a^2 - 24ab + 16b^2 
(3a-4b)(3a-4b)
=(3a-4b)^2
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Cheers,
Stan H.
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