Question

Найдите дискриминант и корни. Пожалуйста)))

Answer 1

3x^2 + 5x - 2 = o
D = 5^2 - 4*3*(-2) = 25 + 24 = 49 = 7^2
 x1 = -5+7/2*3 = 2/6 = 1/3
x2 = -5-7/2*3 = -12/6 = -3



2x^2 - 7x +3 = 0
D = (-7)^2 - 4*2*3 = 49 - 24 = 25 = 5^2
x1 = 7+5/2*2 = 12/4 = 3
x2 = 7-5/2*2 = 2/4 = 1/2