[ Answer ]
[tex]\boxed{121}[/tex]
[ Explanation ]
[tex]3x^{2}[/tex] + 5x + 25
X = 3
Replace 3 For X
[tex]3*3^{2}[/tex] + (5 * 3) + 25
Solve
5 * 3 = 15
3 * 3 = 9
9 * 9 = 81
Insert Numbers
81 + 15 + 25
= 121
[tex]\boxed{[ \ Eclipsed \ ]}[/tex]
we have given that x = 3
so put the value of x in the given equation
[tex]3 {x}^{2} + 5x + 25 \\ 3 ( {3}^{2} ) + 5(3) + 25 \\ 3(9) + 15 + 25 \\ 27 + 25 + 15 \\ 27 + 40 \\ 67[/tex]
so our answer is 67
Hope it helps