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Question

Solve each of the following quadratic equations:

x+3x-2-1-xx=414, x2, 0

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Solution

Given:x+3x-2-1-xx=414(x + 3)(x 2) (1 x)x = 174 x(x + 3) (1 x)(x 2)(x 2)x = 174 x2 + 3x (x 2 x2 + 2x)x2 2x = 174 x2 + 3x + x2 3x + 2x2 2x = 174 2x2 + 2x2 2x = 174 8x2 + 8 = 17x2 34x [On cross multiplying] 9x2 + 34x + 8 = 0 9x2 34x 8 = 0 9x2 36x + 2x 8 = 0 9x(x 4) + 2(x 4) = 0 (x 4)(9x + 2) = 0 x 4 = 0 or 9x + 2 = 0 x = 4 or x = 29Hence, the roots of the equation are 4 and 29.

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