Answer:
7.99
Step-by-step explanation:
You have the following expression:
x^2 + 3x
In order to determine the value of the previous expression for x = 1.7, replace this value into the previous expression and simplify:
(1.7)^2 + 3(1.7) = 2.89 + 5.1 = 7.99
Hence, the result is 7.99