Explanation:
(x+4)(2x−5)(x−1)
----------------------c
(x+1)(x+4)(2x−5)
(x+4)^(1-1)(2x-5)^(1-1)(2x-5)^(1-1)
(x+4)°(2x−5)°(x−1)°
1×1×1
1
law of indices says that x²/x=x^(2-1)=x
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