limit x tends to 1/2 : 8x³-1 ÷ 16x⁴-1
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factorising 8x cube-1. that is(2x-1)(4xsquare+4x+1)similarly factorising 16x tothe power 4-1. that is (4xsquare-1)(4xsquare+1) again factorising 4xsquare-1 we get. (2x-1)(2x+1) therefore. dividing1and 2 2x-1 get cancelled. so apllying limit to 4xsquare+4x+1/(4xsqure+1)(2x+1) we get 1+2+1/(1+1)(11+1)=4/4=1. so ans is one
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