Find the value of 'x' if 56+x=−1
-13/7
-11/6
16/3
1
=−116
If one root of the equation 2x2+ax+6=0 is 3, then find the value of a.
The mean of 5 observatons x+3,x+5,x+7,x+9,x+11 is 14. Find the value of x.