Answer:
26
Step-by-step explanation:
3x^2 + 7x
when x = 2,
=> 3(2)^2 + 7(2)
=> 3(4) + 14
=> 12 + 14
=> 26
I assume you mean [tex]3x^2+7x[/tex] for [tex]x=2[/tex]:
[tex]3(2)^2+7(2)[/tex]
[tex]3(4)+14[/tex]
[tex]12+14[/tex]
[tex]26[/tex]
