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simplify:y=(2x-5)^2-3(2x-5)-4

simplify:
y=(2x-5)^2 -3(2x-5)-4
 
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1 Answer

y= (2x-5)2 - 3(2x-5) -4
 
=> 4x2 +25 - 20x - 6x + 15 -4 = 4x2 -26x + 36
 
=> 4x2 -18x -8x +36 = 2x(2x-9) -4(2x-9) = (2x-4)(2x-9)
 
:)