simplify: y=(2x-5)^2 -3(2x-5)-4 3/30/2014 | Susan from Washington, NC | 1 Answer | 0 Votes Mark favorite Subscribe Comment
y= (2x-5)^{2} - 3(2x-5) -4 => 4x^{2} +25 - 20x - 6x + 15 -4 = 4x^{2} -26x + 36 => 4x^{2} -18x -8x +36 = 2x(2x-9) -4(2x-9) = (2x-4)(2x-9) :) 3/30/2014 | Amarjeet K. Comment