Find the equation of tangents of the following curves at the given points:
(i) Curve`x^(2) = 25` at point (3, 4)
(ii) Curve `y = 2x^(3) + 2x^(2) - 8x+7` at point (1, 3)
(iii) Curve `y = x + 2/x` at point (2, 3)
(iv) Curve` y^(2)(x-1) = 4x^(2)` at point (5, 5)

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Correct Answer - (i) 3x+4y=25, (ii)2x-y+1=0, (iii) x-2y +4 =0, (iv) 3x-8y+25=0

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