I am drawing a blank on these problems :
(x+2)(x+1)=x^2 + 11
My first thoughts were to multiply what's left of the equal sign...
So I got:
x^2 + 3x + 3 = x^2 + 11
Next, I moved the x^2 to the right of the "=" to the left and it was eliminated.
Next, I moved the 3 to the right side and got - 3x = 8 and then x = 8/3
Is that correct?
Next I have to solve by factoring:
(x+1)^2 - 4 = 0
My first instincts are to rewrite (x+1)^2 as (x+1) (x+1) and then multiply.
I got: x^2 + 2x - 2 = 0. Do I use the quadratic formula to solve? Thanks in advance!