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Question

Solve 2xx3+12x+3+3x+9(x3)(2x+3)=0 and find the value of x+1

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Solution

Obviously the given equation is valid if x30and2x+30
Multiplying throughout by (x - 3)(2x + 3) we get 2x(2x + 3) + 1(x - 3) + 3x + 9 = 0
or 4x2+10x+6=0
or 2x2+5x+3=0
or (2x + 3)(x + 1) = 0
But 2x+30 so we get x + 1 = 0
This gives x = -1 as the only solution of the given equation

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