在实数范围内定义一种新运算“*”,其规则是a*b=a2-b2,如果(x+2)*5>(x-5)(5+x),则x的取值范围是( )_刷题宝

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在实数范围内定义一种新运算“*”,其规则是a*b=a²-b²,如果(x+2)*5>(x-5)(5+x),则x的取值范围是( )

A：x>-1

B：x<-1

C：x>46

D：x<46

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A

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