Question

Solve by Factoring: x^2 - 2x + 1 = 0

Answer 1

x^2+2xy+y^2= (x+y)^2

x^2-2xy+y^2= (x-y)^2

i think u will be able to solve it with that knoledge

Answer 2

its similar to the last one only
factor -2 into two parts and b
such that
a*b=1
a+b=-2

Answer 3

x^2-2x+1=0
We have a=1,b=-2,c=1
If a+b+c=0 then we have two solutions:
First, x1=1, x2=b/a=1
--> x=1 and x=1 (in this case, the same solutions)
Or you can say x^2-2x+1 is (x-1)^2-->x=1