+0  
 
+1
198
1
avatar+973 

Define $a * b$ as $2a - b^2$. If $a * 5 = 9$, what is the value of $a$?

 Jul 8, 2018
 #1
avatar+3994 
+1

So, a*b=2a-b^2, a*5=9, a=9/5

smileysmiley

 Jul 8, 2018

21 Online Users

avatar
avatar
avatar
avatar
avatar