Question

Insert the missing number .
12+85÷x=x

Answer 1

STEP BY STEP EXPLANATION...

$12 + 85 \div x = x \\ (12x + 85) \div x = x \\ 12x + 85 = x {}^{2} \\ x {}^{2} - 12x - 85$

NOW ,

YOU CAN FIND THE VALUE OF x BY

QUADRATIC EQUATION FORMALA

BY THE PIC YOU WILL UNDERATAND

YOU WILL GET TWO VALUE OF x..