Question

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how do i solve this with the pq- formula?

Answer 1

Answer:

$\displaystyle \boxed{\text{\sf \Large x=-1}}$

Step-by-step explanation:

Add 1 to both sides

$x^2+2x+1=0$

Use quadratic formula with a=1, b=2, c=1

$\displaystyle x=\frac{-b \pm \sqrt{b^2-4ac} }{2a}$

$\displaystyle x= \frac{-(2) \pm \sqrt{(2)^2-4(1)(1)} }{2(1)}=-1$

Answer 2

Step-by-step explanation:

x²+2x+1

x²+x+x+1

x(x+1)1(x+1).

(x+1)(x+1)

x=-1. , x=-1