Question

упавнение 2x^2-7x+5=0

Answer 1

Ответ: X1= 2,5 X2= 1

Answer 2

$2x^{2} -7x+5=0 \\ D=b^{2} -4ac=49-40=9 \\ x_{1} = \frac{-b+ \sqrt{D} }{2a} = \frac{7+3}{4} =2.5 \\ x_{2} = \frac{-b- \sqrt{D} }{2a} = \frac{7-3}{4}=1$