tìm x 2x^2=18 (x-1)^3=8 (2x-1)^4= 81 3^2^x.27=3^11 2^3×5 – (x +3^2)=10 3^2.x^2-2^3 . x^2 = 16 9(x+3) + 2^2 . 5^2 = 2^4 . 3^2 –

0 bình luận về “tìm x 2x^2=18 (x-1)^3=8 (2x-1)^4= 81 3^2^x.27=3^11 2^3×5 – (x +3^2)=10 3^2.x^2-2^3 . x^2 = 16 9(x+3) + 2^2 . 5^2 = 2^4 . 3^2 –”

1.  2x^2= 18 

   =>x^2= 18:2=9

   =>x^2=3^2

   =>x=3

   b,  (x-1)^3=8

   =>(x-1)^3=2^3

   =>x-1=2

   =>x=2+1=3

   c, (2x-1)^4= 81

   =>(2x-1)^4= 3^4

   =>2x-1= 3

   =>2x=4

   =>x=4:2=2

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