Question

agora resolva as equações a seguir : Y2-7Y+6=0

Answer 1

-b+-raiz b2-4ac/2a
7+-raiz 49-24/ 2
7+-raiz 25/2
7+-5/2
x'= 7+5/2
x'= 6

x"= 7-5/2
x"= 1
S:{ 6, 1 }