Question

calculați cu formula deltei x^2-2x+1​

Answer 1

$x^{2} -2x+1=0$

$a=1\\b=-2\\c=1$

Δ=$b^{2} -4ac$

Δ=$(-2)^{2} -4*1*1$

Δ=4-4

Δ=0

$x1=\frac{2+0}{2} =\frac{2}{2} =1$

$x2=\frac{2-0}{2} =\frac{2}{2} =1$

$x1=x2=1=>x=1$