Question

4x²-25=0решите уравнение

Answer 1

$4 x^{2} -25=0 4 x^{2} =25 x^{2} = frac{25}{4} x=+- sqrt{ frac{25}{4} } x_{1} = frac{5}{2} =2.5 x_{2} =- frac{5}{2} =-2.5$