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(√(x+3)-√(-x+3))/x=
(√(x+3)-√(-x+3) x (√(x+3)+(√(-x+3)/(√(x+3)+√(-x+3)=(x+3)-(-x+3)/x(√(x+3)+√(-x+3)
=((x+3)+(x-3) / x(√(x+3)+√(-x+3)
=(2x) / (x+√(3x)-x+√(3x)
=2x / (√(3x)+√(3x)
=2x/2√(3x)
=x/√(3x)
=1/√(3)
=1/√(3) x √(3)/√(3)
=√(3)/3
=1/3√(3)
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Pilihan A.
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