Answers

2014-06-28T19:03:28+05:30
(7x-7)(-2x+9)
=7x(-2x+9)-7(-2x+9)
=-14x²+63x+14x-63
=-14x²+14x+63x-63
=-14x(x-1)+63(x-1)
=(x-1)(63-14x)
hope i helped u:)                   
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2014-06-28T20:27:54+05:30
(7x-7)(-2x+9) =7x (-2x+9)-7(-2x-9) =-14x^2+63x+14x+63 =-14x^2+77x+63.
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