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(2x-3)^2-(4x+1)(x-4)
(2x-3)(2x-3)-(4x+1)(x-4)
Expand Each and Gather Like Terms
F First terms 8x^2
O Outside terms -6x
I Inside terms -6x
L Last terms 9
minus
F First terms 4x^2
O Outside terms -16x
I Inside terms x
L Last terms -4