这道英语IQ怎么写?if the difference of two number is 10 and their produrt is 12,what is the sum of their squares?

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这道英语IQ怎么写?ifthedifferenceoftwonumberis10andtheirprodurtis12,whatisthesumoftheirsquares?这道英语IQ怎么写?ift

这道英语IQ怎么写?if the difference of two number is 10 and their produrt is 12,what is the sum of their squares?
这道英语IQ怎么写?
if the difference of two number is 10 and their produrt is 12,what is the sum of their squares?

这道英语IQ怎么写?if the difference of two number is 10 and their produrt is 12,what is the sum of their squares?
a-b=10
a*b=12
（a-b）∧2=100
a∧2-2ab+b∧2=100
所以a∧2+b∧2=100+2ab=100+2*12=124
a∧2+b∧2=124

x-y=10→(x－y)²=x²＋y²－2xy=100
xy=12
∴x²＋y²=100＋2×12=124

A-B=10
AB=12
一式平方后为A^2+B^2-2AB=100，二式代入，即为所求A^2+B^2=124

number->numbers, produrt->product, 不知道还有什么错误?

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