用适当方法解下列方程:(1)x²+7x+6=0 (2)x²-5x-6=0 (y²-17y+30=0(4)y²-7y-60=0 (5)x²+10x-11=0 (6)x²-12x-28=0 ,快
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/16 17:17:08
![用适当方法解下列方程:(1)x²+7x+6=0 (2)x²-5x-6=0 (y²-17y+30=0(4)y²-7y-60=0 (5)x²+10x-11=0 (6)x²-12x-28=0 ,快](/uploads/image/z/250954-34-4.jpg?t=%E7%94%A8%E9%80%82%E5%BD%93%E6%96%B9%E6%B3%95%E8%A7%A3%E4%B8%8B%E5%88%97%E6%96%B9%E7%A8%8B%EF%BC%9A%EF%BC%881%EF%BC%89x%26%23178%3B%2B7x%2B6%3D0+%EF%BC%882%EF%BC%89x%26%23178%3B-5x-6%3D0+%EF%BC%88y%26%23178%3B-17y%2B30%3D0%EF%BC%884%EF%BC%89y%26%23178%3B-7y-60%3D0+%EF%BC%885%EF%BC%89x%26%23178%3B%2B10x-11%3D0+%EF%BC%886%EF%BC%89x%26%23178%3B-12x-28%3D0+%2C%E5%BF%AB)
xՒJ0_EdCIt E/M
C^8nCN 3i%.0*u*H' ]PN)}{,O?iӺ*ߘ'u 8eŶ2+T]JT UM9M< Bu3*lxl0&%@ԖRBZrqv^gI/@u
用适当方法解下列方程:(1)x²+7x+6=0 (2)x²-5x-6=0 (y²-17y+30=0(4)y²-7y-60=0 (5)x²+10x-11=0 (6)x²-12x-28=0 ,快
用适当方法解下列方程:(1)x²+7x+6=0 (2)x²-5x-6=0 (y²-17y+30=0
(4)y²-7y-60=0 (5)x²+10x-11=0 (6)x²-12x-28=0 ,快
用适当方法解下列方程:(1)x²+7x+6=0 (2)x²-5x-6=0 (y²-17y+30=0(4)y²-7y-60=0 (5)x²+10x-11=0 (6)x²-12x-28=0 ,快
(1)x²+7x+6=0
(x+1)(x+6)=0
x1=-1,x2=-6
(2)x²-5x-6=0
(x+1)(x-6)=0
x1=-1,x2=6
(3)y²-17y+30=0
(x-2)(x-15)=0
x1=2,x2=15
(4)y²-7y-60=0
(y+5)(y-12)=0
y1=-5,y3=12
(5)x²+10x-11=0
(x-1)(x+11)=0
x1=1,x2=-11
(6)x²-12x-28=0
(x+2)(x-14)=0
x1=-2,x2=14