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ivolga24 [154]
3 years ago
7

211 base x is equal to 10110 base 2 ​

Mathematics
1 answer:
Alborosie3 years ago
3 0

Hello,

(211)_x=(10110)_2\\\\2*x^2+x+1=22\\\\2x^2+x-21=0\\\Delta=1+4*2*21=169=13^2\\x=\dfrac{-1+13}{4}= 3\\or\\x=\dfrac{-1-13}{4}\ may\ not\ be\ negative\\\\

<u>x=3</u>

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