Toán Lớp 6: Kết quả đúng là
A. 5+2.3^2=7.3^2=7.9=63
B. 5+2.3^2=5+6^2=〖11〗^2=121
C. 5+2.3^2=5+2.9=5+18=23
D. 5+2.3^2=7.3^2=〖21〗^2=441
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Toán Lớp 6: Kết quả đúng là
A. 5+2.3^2=7.3^2=7.9=63
B. 5+2.3^2=5+6^2=〖11〗^2=121
C. 5+2.3^2=5+2.9=5+18=23
D. 5+2.3^2=7.3^2=〖21〗^2=441
Mong các bn giúp mik ( cảm ơn ạ )
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