✨ 最佳解答 ✨
加油!
22.
x^2 + y^2 -6y +9 =0
x^2 +(y-3)^2 =0
=> x = 0、y = 3
2x+y = 3
23.
x^2 -(4y^2 -12y +9)
= x^2 - (2y-3)^2
= (x+2y-3)(x-2y+3)
(x+2y-3) + (x-2y+3) = 6
2x = 6
x = 3
✨ 最佳解答 ✨
加油!
22.
x^2 + y^2 -6y +9 =0
x^2 +(y-3)^2 =0
=> x = 0、y = 3
2x+y = 3
23.
x^2 -(4y^2 -12y +9)
= x^2 - (2y-3)^2
= (x+2y-3)(x-2y+3)
(x+2y-3) + (x-2y+3) = 6
2x = 6
x = 3
看了這個問題的人
也有瀏覽這些問題喔😉