Question

4 = (x+1)^2 what are the solutions to the equation?
(A) x=1 + square root of 2
(B) x= -1 + square root of 2
(C) x= 1 + 2
(D) x= -1+2

Answer 1

Option C

The solution of equation x^2+3x+4=0 is x= -3+- square root of -7/ 2

Solution: Need to identify correct option for solution of the equation x^2 + 3x + 4 = 0.

Given equation is quadratic equation. We can find solution of this equation using quadratic formula.

According to quadratic formula for general equation  solution of the equation is given by  

The given equation is  So in our case, a = 1, b = 3 and c = 4

On applying quadratic formula we get

As i is square root of -1,

Hence correct option is C that is roots of quadratic equation

Step-by-step explanation: Tell me if i'm wrong