Question 785227
Take the square root of 9/4 to get {{{sqrt(9/4) = 3/2}}}


Note: this does NOT involve a "plus/minus" since the square root function produces exactly one output for any given input.


Now double this to get {{{2*(3/2) = 6/2 = 3}}}


Therefore, the answer is <font color="red">d = 3</font>