18) 4x² + 7x − 3 = 0

Question

Дискриминант: \(D=7^2-4\cdot4\cdot(-3)=97\).

\(x_{1,2}=\frac{-7\pm\sqrt{97}}{8}\).

Ответ: x₁ = \(\frac{-7+\sqrt{97}}8\), x₂ = \(\frac{-7-\sqrt{97}}8\).

Accepted Answer

Дискриминант: \(D=7^2-4\cdot4\cdot(-3)=97\).

\(x_{1,2}=\frac{-7\pm\sqrt{97}}{8}\).

Ответ: x₁ = \(\frac{-7+\sqrt{97}}8\), x₂ = \(\frac{-7-\sqrt{97}}8\).