(2/x+3)(2/x-7) evalute it with perfect formula.
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(2/x + 3)(2/x - 7)
1-(14/x)+(6/x)-21
-20(14/x)+(6/x)
-20(14+6)/x
-20-(14x+6x)
-20-20x
-20x = -20
x = -20+20
x = 0
1-(14/x)+(6/x)-21
-20(14/x)+(6/x)
-20(14+6)/x
-20-(14x+6x)
-20-20x
-20x = -20
x = -20+20
x = 0
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