Toán Lớp 6: 5 mũ x+2 + 2*5 mũ x=135
x+2 là mũ nha
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Toán Lớp 6: 5 mũ x+2 + 2*5 mũ x=135
x+2 là mũ nha
Comments ( 2 )
5^x. 5^2+2.5^x=135
5^x(5^2+2)=135
5^x(25+2)=135
5^x. 27=135
5^x=135:27
5^x=5
5^x=5^1
=>x=1