好簡單ge方程式

Solve the following quadratic equations by completing the square.

x^2+ 7x − 3 = 0

x^2 + 7x − 2 = 0

4x^2 − 4x + 15 = 0

2x^2− 5x + 2 = 0
Update: 我想有埋過程呀..thx!!
2 answers 2