Question

equaçao do 2grau -x²+49=0?

Answer 1

a=1
b=0
c=49

▲=b^-4.a.c
▲=0^-4.1.49
▲=0+196
▲=196

x=-b+|-(raiz quadrada de delta) 2.a
x=-0+|-(raiz quadrada de 196) 2.1
x=-0+|-14

x=-0+14=14/2=12
x=-0-14=-14/2=-12