Question

Help, number bases,321x=57 base 10

Answer 1

convert 321 from base x to 10
i.e. 3x^2+2x+1=57

Answer 2

how then do you work out the quadratic equation?

Answer 3

use the formula

Answer 4

this root is equal to what. calc. pls.

Answer 5

you mean \(\sqrt{-671}\) ??

Answer 6

yes

Answer 7

Okay, \(\sqrt{-671} = \sqrt{671} \times \sqrt{-1}\), and since \(\sqrt{-1}\) is known as \(\large i\), or 'iota' (imaginary number) so, this whole thing equals \(\sqrt{671}i\).

Answer 8

the roots are 4 and -4.67.
since the base cannot be a negative number, x=4