\(x^2-x+\frac{1}{4}=\left(x-\frac{1}{2}\right)\)
\(x^2-x+\frac{1}{4}\)
\(=x^2-2.\frac{1}{2}x+\left(\frac{1}{2}\right)^2\)
\(=\left(x-\frac{1}{2}\right)^2\)
làm đc rồi sorry
\(x^2-x+\frac{1}{4}\)
\(x^2-2×\frac{1}{2}x+\left(\frac{1}{2}\right)^2\)
\(\left(x-\frac{1}{2}\right)^2\)
Tham khảo nha:
\(x^2-x+\frac{1}{4}\)
\(=x^2-2.\frac{1}{2}.x+\left(\frac{1}{2}\right)^2\)
\(=\left(x-\frac{1}{2}\right)^2\)
Khi làm có thể có sai sót, mong bạn thông cảm !!!
