Question

помогите решить уравнения
1, $frac{- x^{2} -2 x+15}{ x^{2} +4 x} =0$
2, $frac{ x^{2} - x-12}{ x^{2} -9} =0$
3. $frac{ 3x^{2} +x-8}{2x^{2}+6} =0$
4.$frac{1}{2} + frac{4}{ x} = frac{5}{ x-3}$
5.$frac{7}{ x} + frac{1}{ x-5} = 1 frac{1}{2}$

Answer 1

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