I walk to school sometimes 改同义句
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I walk to school sometimes 改同义句
1.I___to school____ _____sometimes
2.数学题;若m、n互为相反数,x、y互为倒数,且a的绝对值是1,求a的平方乘xy+b的平方 乘(m+n)+a的值
1.I___to school____ _____sometimes
2.数学题;若m、n互为相反数,x、y互为倒数,且a的绝对值是1,求a的平方乘xy+b的平方 乘(m+n)+a的值
(1) I go to school on foot sometimes .
(2)
因为m、n互为相反数
所以m + n = 0
因为x、y互为倒数
所以 xy = 1
因为a的绝对值是1
所以 a = 1 或 a = -1
a²xy + b²(m + n) + a
= 1 + 0 + a
= a + 1
= 0 或 2
(2)
因为m、n互为相反数
所以m + n = 0
因为x、y互为倒数
所以 xy = 1
因为a的绝对值是1
所以 a = 1 或 a = -1
a²xy + b²(m + n) + a
= 1 + 0 + a
= a + 1
= 0 或 2
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