Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees. ... For example, a 50-degree angle and a 40-degree angle are complementary; a 60-degree angle and a 120-degree angle are supplementary
No. To solve the equation it needs to be set to 0. 1. x^2 +7x = 0 Then the GCF needs to be found 2. x(x+7) = 0 Set each to 0 3. x= 0 or x+7=0 Solve for x 4. x=0 or x=-7