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

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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
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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