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-sqrt(x - 1) %2B sqrt(x %2B 1)=sqrt(4*x - 1) |
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Answer» b root (x+1) -root(x-1)=root(4x-1) squaring both sides, we get x+1+x-1-2root(x^2-1)=4x-1 2x-2root(x^2-1)=4x-1 -2x+1=2root(x^2-1) squaring again both sides 4x^2+1-4x=4(x^2-1) 4x^2+1-4x=4x^2-4 5=4x x= 5/4it is having only one solution show option B is the right answer thank you so much |
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