Question

Quais as raizes da função f(x)=x2+5x?

Answer 1

As raízes da função dada são $"0"\ e "-5".$

Inicialmente iguala-se a função a zero.

$f(x) = x^2 + 5x\\\\x^2 + 5x = 0\\\\x.(x + 5) = 0\\\\x = 0\\\\\\ou\\\\x + 5 = 0\\\\x = -5$

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