Toán Lớp 6: x^20=x;
x^6:x^3=125
(2x-15)^5=(2x-15)^3
3^x+2-5.3^x=36
7.4^x-1+4^x+1=23
2.2^2x+4^3..4^x=1056
giải giúp mình zới.cảm ơn nhiều hen
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Toán Lớp 6: x^20=x;
x^6:x^3=125
(2x-15)^5=(2x-15)^3
3^x+2-5.3^x=36
7.4^x-1+4^x+1=23
2.2^2x+4^3..4^x=1056
giải giúp mình zới.cảm ơn nhiều hen
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