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已知10x=3,10y=4,则102x+3y=()A.574B.575C.576D.577
题目详情
已知10 x =3,10 y =4,则10 2x+3y =( )
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A.574 | B.575 | C.576 | D.577 |
A.574 | B.575 | C.576 | D.577 |
A.574 | B.575 | C.576 | D.577 |
A.574 | B.575 | C.576 | D.577 |
A.574 | B.575 | C.576 | D.577 |
▼优质解答
答案和解析
10 2x+3y =(10 x ) 2 •(10 y ) 3 =3 2 ×4 3 =9×64=576.
故选C. 10 2x+3y =(10 x ) 2 •(10 y ) 3 =3 2 ×4 3 =9×64=576.
故选C. 10 2x+3y =(10 x ) 2 •(10 y ) 3 =3 2 ×4 3 =9×64=576.
故选C. 10 2x+3y 2x+3y =(10 x x ) 2 2 •(10 y y ) 3 3 =3 2 2 ×4 3 3 =9×64=576.
故选C.
10 2x+3y =(10 x ) 2 •(10 y ) 3 =3 2 ×4 3 =9×64=576. 故选C. |
故选C.
故选C.
故选C.
故选C.
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