The answer is 11.66 or 11.67 depending on how you round the decimal
Replace u,x and y withyour values
u+xy=2+9*6=2+54=56
<u> 4 x² = 64</u>
Divide each side by 4 : x² = 16
Take the square root
of each side: x = √16
x = <em>+ 4</em>
and
x = <em>- 4</em> .
A factor of 24 but not 2 it would be 3
