Respuesta :

Answer:

7.99

Step-by-step explanation:

x2 = x^2 I am assuming.

So,

x^2 + 3x = (1.7)^2 + 3(1.7) = 2.89 + 5.1 = 7.99

Answer:

x^2+3x=(1.7)^2+3(1.7)=2.89+5.1=7.99

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