●初2几道数学题●要有过程●速度●!`

掌声留给你们自己2022-10-04 11:39:541条回答

●初2几道数学题●要有过程●速度●!`
1,若a+1/a=3,a的4次方+1/a的4次方=______.
2,已知(a+b)的平方=7,(a-b)的平方=3,求1/2(a的平方+b的平方)的植.
3,若x,y满足x的平方+2y的平方-2xy-2y+1=0,求xy的值.
4,行商下面各等式:
3的平方+4的平方=5的平方
10的平方+11的平方+12的平方=13的平方+14的平方
请你写出下一个由7个连续正整数组成,前4个数的平方和等于后3个数的平方和的等式为:______.
●过●程●写●详●细●
●●重●在●过●程,●不●在●结●果!!!!

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gchcic 共回答了17个问题 | 采纳率88.2%
嘿嘿
我不想拿30分
哈哈哈!
1年前

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初2几道英文题,只需要把答案写出来.
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偶然_妖精1年前2
sgpcc 共回答了17个问题 | 采纳率94.1%
healthy health
careful carefully
spent spend
wrote write
is been
playing
buy
going
to eat
fix
visit
to have

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