解方程:⑴ 2y²=8 ⑵ 2(x-8)²=50 ⑶ (2x-1)²

问题描述:

解方程:⑴ 2y²=8 ⑵ 2(x-8)²=50 ⑶ (2x-1)²
解方程:⑴ 2y²=8 ⑵ 2(x-8)²=50 ⑶ (2x-1)²-4=0 ⑷ 4x²-4x+1=0 ⑸ 3(x-1)²-6=0 ⑹ x²-4x+4=5 ⑺ 9x²-5=3 ⑻ (x+6)²-9=0 ⑼ 9x²+6x+1=4 草稿纸写过程发送,

(1)y=2或y=-2
(2)x=13或x=3
(3)x=3/2或x=-1/2
(4)x=1/2(或0.5)
(5)x=√2+1或x=-√2+1
(6)x=-√5+2或x=√5+2
(7)x=(2√2)/3或x=-(2√2)/3
(8)x=-3或x=-9
(9)x=1/3或x=-1