Mathematics
Solve the following equation:
Quadratic Equations
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Answer
Given, .
Taking L.C.M. we get,
By cross multiplication we get,
⇒ 8(2 - x) - 3(x + 3) = 2(x + 3)(2 - x)
⇒ 16 - 8x - 3x - 9 = 2(2x - x2 + 6 - 3x)
⇒ 7 - 11x = 2(6 - x - x2)
⇒ 7 - 11x = 12 - 2x - 2x2
⇒ 2x2 - 11x + 2x + 7 - 12 = 0
⇒ 2x2 - 9x - 5 = 0
⇒ 2x2 - 10x + x - 5 = 0
⇒ 2x(x - 5) + 1(x - 5) = 0
⇒ (2x + 1)(x - 5) = 0
⇒ 2x + 1 = 0 or x - 5 = 0
⇒ 2x = -1 or x = 5
⇒ x = or x = 5.
Hence, roots of the given equations are , 5.
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