Question

Select the correct answer,What are the solutions of this quadratic equation?25x2+1=0

Answer 1

we have

25x^2+1=0

solve the quadratic equation

25x^2=-1

REmember that

i^2=-1

substitute

25x^2=i^2

square root both sides

5x=(+/-)i

x=(+/-)(i/5)

x=(+/-)(1/5)i

therefore

the answer is the first option