Answer:
If you meant x squares (x^2) +3x then the answer is 7.99
Step-by-step explanation:
[tex] \boxed {ans \: is \: = 7.99}[/tex]
[tex]if \: x =1. 7 \: then \to \\ x {}^{2} + 3x = \\ {1.7}^{2} + 3(1.7) = \\ 2.89 + 5.1 = \\ \boxed{7.99}[/tex]
