Question

Dada a função x=-b 2 -4 2a

Answer 1

Resposta:

▲=b^2-4ac

▲=9-4.1.(-10)

▲=49

x=-3+-V49/2.1

x=3+-7/2

x'=3+7/2 >>> x'=5

x"=3-7/2 >>> x"=-2