一道英语和两个数学方程.急救1.4y²-（√2+4）y+√2=0 x²+2mx-n²=0(x为未知数)2.the much comfortable make and more faster trains trips boring and 将这些单词组成一个句意完整的句子英语那里可以不做

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/27 19:42:41
一道英语和两个数学方程.急救1.4y²-（√2+4）y+√2=0 x²+2mx-n²=0(x为未知数)2.the much comfortable make and more faster trains trips boring and 将这些单词组成一个句意完整的句子英语那里可以不做
xRQKP+pM'v/fJmm!hń,行L ؽ'Bww Bzz|T^yQ97!:kޭ ;F;}<.{*𢳹!lmpYKrVw S@6ڜa*a_ kb̤y0W9]%g@WU7MK1eE$X2AV7Ÿ\;i:Q}\m&v^h؉-n'MӾP'eSo$@E /H2? k-QFBte'0pL80u@Fj{ H5xцD" &"pk8R,Z&+m^!0^0

一道英语和两个数学方程.急救1.4y²-（√2+4）y+√2=0 x²+2mx-n²=0(x为未知数)2.the much comfortable make and more faster trains trips boring and 将这些单词组成一个句意完整的句子英语那里可以不做
一道英语和两个数学方程.急救
1.4y²-（√2+4）y+√2=0 x²+2mx-n²=0(x为未知数)
2.the much comfortable make and more faster trains trips boring and 将这些单词组成一个句意完整的句子
英语那里可以不做

一道英语和两个数学方程.急救1.4y²-（√2+4）y+√2=0 x²+2mx-n²=0(x为未知数)2.the much comfortable make and more faster trains trips boring and 将这些单词组成一个句意完整的句子英语那里可以不做
4y²-（√2+4）y+√2=0
(4y-√2)(y-1)=
所以y=2√2或y=1
x²+2mx-n²=0
x²+2mx+m²-m²-n²=0
x²+2mx+m²=m²+n²
(x+m)²=m²+n²
所以x=√（m²+n²） -m 或 x= -√（m²+n²） -m

1.1 y=1或y=√2/4