Question

Квадратные уравнения x^2-2x-10=0

Answer 1

x^2 - 2x - 10 = 0 
D = 4 + 4*10 = 44 
√D = 2√11
x₁ = (2 + 2√11)/2 = 1 + √11
x₂ = (2 - 2√11)/2 = 1 - √11