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posted by Sam on Wednesday, May 2, 2012 at 9:55pm.
multiply: a)(2x+5)(2x-5) b) -4x^3(6x-3x^4) show your work. please help me!!
a ) ( 2 x + 5 )( 2 x - 5 ) = 2 x * 2 x + 2 x * 5 - 5 * 2 x - 5 * 5 = 4 x ^ 2 + 10 x - 10 x - 25 = 4 x ^ 2 - 25
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