Question

Which are the solutions of the quadra
x2 = 7x + 4

Answer 1

x1=(7-√65)/2

x2=(7+√65)/2

Explanation:

x^2=7x+4

x^2-7x-4=0

D=(-7)^2-4*1*(-4)=49+16=65

x1=(-(-7)-√D)/(2*1)=(7-√65)/2

x2=(-(-7)+√D)/(2*1)=(7+√65)/2