Question

What is the solutions of x2 = –13x – 4

Answer 1

`x^(2) =-13x-4 \\ x^2+13x+4=0 \\ D=b^2-4ac=13^2-4*1*4=169-16=153 \\ x_(1,2)= (-bб √(D) )/(2a) \\ \\ x_1= (-13- √(153) )/(2)=- (13- 3√(17) )/(2) \\ \\ x_2= (-13+ √(153) )/(2)= (3 √(17) -13)/(2)`