F(x)=(x+2)(2x-5)-(2x-5)(4x-1)
= (2x-5)[(x+2)-(4x-1)]
=(2x-5)(x+2-4x+1)
=(2x-5)(-3x+3)
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F(x)=(x+2)(2x-5)-(2x-5)(4x-1)
= (2x-5)[(x+2)-(4x-1)]
=(2x-5)(x+2-4x+1)
=(2x-5)(-3x+3)