Question

x-6x+9
a+8a+16
no a e no x tem o 2 em cima

Answer 1

x²-6x+9=
x= 6+-√(6)²-4.1.9/2.1
x=6+-√36-36/2
x=6+-√0/2
x=6+-0/2
x=3

a²+8a+16=
x=-8+-√(8)²-4.1.16/2.1
x=-8+-√64-64/2
x=-8+-√0/2
x=-8+-0/2
x=-4