+0  
 
+2
106
1
avatar+147 

Let a and b be real numbers such that $a+b=-1$. Compute $a^2-b^2+a-b$.

 Feb 15, 2021
 #1
avatar+11656 
+1

Let a and b be real numbers such that a + b = - 1 . Compute  \(a^2-b^2+a-b\).

 

Hello Guest!

 

\(a + b = - 1\ |\times (a-b)\\ a^2-b^2=-a+b\\ \color{blue}a^2-b^2+a-b=0\)

laugh  !

 Feb 15, 2021

20 Online Users

avatar
avatar